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An extremely rare condition in which a female has two extra X chromosomes.

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Last Updated: Jun 13, 2017

A

A chronic immune system disease caused by HIV (human immunodeficiency virus).

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Last Updated: Apr 25, 2018

An enlarged area in the lower part of the aorta, a major blood vessel.

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Last Updated: Jun 13, 2017

Bloating and swelling in the belly area.

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Last Updated: May 25, 2018

Excess weight that develops over time around the center of the body, also called visceral fat.

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Last Updated: May 26, 2018

Pain from inside the abdomen or the outer muscle wall, ranging from mild and temporary to severe and requiring emergency care.

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Last Updated: May 26, 2018

An injury caused by something that rubs or scrapes against the skin or tissue.

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Last Updated: Jun 13, 2017

A confined pocket of pus that collects in tissues, organs, or spaces inside the body.

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Last Updated: Jun 13, 2017

A skin condition characterized by dark, velvety patches in body folds and creases.

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Last Updated: Jun 13, 2017

A rare disorder making it difficult for food and liquid to pass into the stomach.

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Last Updated: Jun 13, 2017

An injury of the Achilles tendon, which connects the calf muscle to the heel bone.

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Last Updated: Jun 13, 2017

A partial or complete disruption of the tendon just above the heel, resulting in inability to raise the foot.

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Last Updated: Jun 13, 2017

The most common type of short-limbed dwarfism.

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Last Updated: Jun 13, 2017

A buildup of acid in the bloodstream.

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Last Updated: May 26, 2018

A skin condition that occurs when hair follicles plug with oil and dead skin cells.

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Last Updated: Jun 13, 2017

A disorder in adults in which the pituitary gland produces too much growth hormone.

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Last Updated: Jun 13, 2017

A rough, scaly patch on the skin caused by years of sun exposure.

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Last Updated: Jun 13, 2017

Any condition brought on by a sudden reduction or blockage of blood flow to the heart.

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Last Updated: May 25, 2018

A type of cancer of the blood and bone marrow that affects white blood cells.

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Last Updated: Jun 13, 2017

A type of cancer of the blood and bone marrow that affects mature blood cell growth.

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Last Updated: Jun 13, 2017

Sudden inflammation in the pancreas.

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Last Updated: Jun 13, 2017

A condition in which the kidneys suddenly can't filter waste from the blood.

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Last Updated: Jun 13, 2017

Condition in which fluid collects in the lungs' air sacs, depriving organs of oxygen.

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Last Updated: Jun 13, 2017

A disorder in which the adrenal glands don't produce enough hormones.

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Last Updated: May 25, 2018

Inflammation of a gland or infection-fighting node (lymph node).

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Last Updated: Jun 13, 2017

A form of cancer that starts in the glandular cells.

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Last Updated: Jun 13, 2017

A noncancerous tumor occurring in glandular tissue.

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Last Updated: Jun 13, 2017

A condition in which endometrial tissue exists within and grows into the uterine wall.

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Last Updated: Jun 13, 2017

A condition characterized by stiffness and pain in the shoulder joint.

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Last Updated: Jun 13, 2017

A type of stress-related mental condition brought on by a life change.

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Last Updated: Jun 13, 2017

A group of nonspecific symptoms such as aches, fatigue, and nervousness.

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Last Updated: Jun 13, 2017

A disorder in which the adrenal glands don't make enough of certain hormones.

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Last Updated: Jun 13, 2017

A genetic condition that damages the membrane surrounding the brain nerve cells.

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Last Updated: Jun 13, 2017

A mental health condition exhibited by difficulty maintaining attention.

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Last Updated: Jun 13, 2017

A disease caused by infection with the parasite Trypanosoma brucei.

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Last Updated: Jun 13, 2017

A type of behavior intending to cause physical or mental harm.

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Last Updated: May 25, 2018

Loss of the ability to identify objects or people.

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Last Updated: May 25, 2018

Fear of places and situations that might cause panic, helplessness, or embarrassment.

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Last Updated: Jun 13, 2017

A feeling of muscle quivering, restlessness, and inability to sit still, sometimes a side effect of antipsychotic or antidepressant medication.

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Last Updated: May 24, 2018

A group of inherited disorders characterized by little or no melanin production.

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Last Updated: Jun 13, 2017

A pattern of drinking that interferes with day-to-day activities.

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Last Updated: Jun 13, 2017

A disturbance in behavior or mental acuity during or after alcohol consumption.

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Last Updated: Jun 13, 2017

Symptoms that occur after stopping heavy drinking of alcohol.

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Last Updated: Jun 13, 2017

A chronic disease including uncontrolled drinking and preoccupation with alcohol.

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Last Updated: Jun 13, 2017

An allergic response causing itchy, watery eyes, sneezing, and other similar symptoms.

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Last Updated: Jun 13, 2017

Inflammation of the cavities and membranes in and around the nasal passages due to allergies.

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Last Updated: Jun 13, 2017

Hair loss from the scalp or elsewhere, which can occur in men, women, and children.

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Last Updated: Jun 13, 2017

Sudden hair loss that starts with 1 or more circular bald patches that may overlap.

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Last Updated: Jun 13, 2017

Physical distress from difficulty adjusting to lower oxygen pressure at high altitude.

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Last Updated: Jun 13, 2017

A painful dental condition occurring after an adult tooth is removed.

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Last Updated: Jun 13, 2017

A progressive disease that destroys memory and other important mental functions.

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Last Updated: Jun 13, 2017

A parasitic infection of the colon with the amoeba Entamoeba histolytica.

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Last Updated: Jun 13, 2017

The absence of monthly menstrual periods.

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Last Updated: May 25, 2018

Inability to remember events for a period of time, often due to brain injury, illness, or the effects of drugs or alcohol.

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Last Updated: Jun 13, 2017

The buildup of amyloid proteins in the heart, kidneys, liver, or other organs.

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Last Updated: Apr 25, 2018

A nervous system disease that weakens muscles and impacts physical function.

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Last Updated: Jun 13, 2017

A rare cancer that occurs in the short tube at the end of the rectum (anal canal).

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Last Updated: Jul 31, 2019

A small tear in the lining of the anus.

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Last Updated: Jun 13, 2017

An infection between the skin and the anus.

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Last Updated: Jun 13, 2017

A severe, potentially life-threatening allergic reaction.

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Last Updated: Jun 13, 2017

General swelling throughout the body.

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Last Updated: May 26, 2018

Hair loss from the scalp, causing baldness.

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Last Updated: Jun 13, 2017

Aging-related hormone changes in men.

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Last Updated: Jun 13, 2017

A condition in which the blood doesn't have enough healthy red blood cells.

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Last Updated: Jun 13, 2017

Low red blood cells caused by certain chronic diseases.

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Last Updated: Jun 13, 2017

An underdeveloped brain and an incomplete skull.

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Last Updated: Jun 13, 2017

One or more missing or extra chromosomes.

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Last Updated: Jun 13, 2017

A ballooning and weakened area in an artery.

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Last Updated: Jun 13, 2017

A genetic disorder causing developmental disabilities and nerve-related symptoms.

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Last Updated: Jun 13, 2017

An intense negative emotion ranging from mild irritation to rage.

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Last Updated: May 26, 2018

A type of chest pain caused by reduced blood flow to the heart.

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Last Updated: Apr 25, 2018

Painless swelling under the skin, triggered by an allergy to animal dander, pollen, drugs, venom, food, or medication.

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Last Updated: May 24, 2018

Inflammation and small tears in one or both corners of the mouth.

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Last Updated: Jun 13, 2017

An inability to experience pleasure.

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Last Updated: May 25, 2018

Physical discomfort in the ankle area, often including the joint or the tendon that connects the lower leg to the heel (Achilles tendon).

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Last Updated: May 25, 2018

A condition that restricts the tongue's range of motion.

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Last Updated: Jun 13, 2017

An inflammatory disease that fuses spinal vertebrae together.

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Last Updated: Jun 13, 2017

An eating disorder causing people to obsess about weight and what they eat.

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Last Updated: Jun 13, 2017

A torn anterior cruciate ligament in the knee.

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Last Updated: Jun 13, 2017

A rare but serious bacterial illness.

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Last Updated: Jun 13, 2017

A disorder in which the immune system mistakenly attacks normal proteins in the blood.

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Last Updated: Jun 13, 2017

A dysfunction of a person's ways of thinking, perceiving situations, and relating to others.

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Last Updated: May 26, 2018

A chronic mental condition that affects thinking, perceiving, and relating to others.

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Last Updated: Jun 13, 2017

Intense, excessive, and persistent worry and fear about everyday situations. Fast heart rate, rapid breathing, sweating, and feeling tired may occur.

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Last Updated: May 25, 2018

A mental condition in which excessive, ongoing worry interferes with regular activities.

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Last Updated: Jun 13, 2017

A tear in the inner layer of the large blood vessel branching off the heart (aorta).

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Last Updated: Jun 13, 2017

Narrowing of the valve in the large blood vessel branching off the heart (aorta).

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Last Updated: Jun 13, 2017

Feeling indifferent or lacking emotion, often a sign of depression or misuse of alcohol or drugs.

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Last Updated: May 25, 2018

A language disorder that affects a person's ability to communicate.

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Last Updated: Jun 13, 2017

A rare condition in which the body stops producing enough new blood cells.

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Last Updated: Jun 13, 2017

A condition in which the appendix becomes inflamed and filled with pus, causing pain.

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Last Updated: Jun 13, 2017

Cancer of the finger-shaped pouch attached to the colon (appendix).

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Last Updated: Jun 13, 2017

Reduced desire to eat.

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Last Updated: May 24, 2018

Inability to perform a movement or task when asked despite having the desire and physical capability to carry it out.

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Last Updated: Jun 13, 2017

Difficulty with skilled movements even when a person has the ability and desire to do them.

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Last Updated: Jun 13, 2017

Physical discomfort in any part of the arm.

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Last Updated: May 25, 2018

A condition in which brain tissue extends into the spinal canal, present at birth.

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Last Updated: Jun 13, 2017

An abnormal connection between arteries and veins, usually in the brain or spine.

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Last Updated: Jun 13, 2017

Inflammation of 1 or more joints, causing pain and stiffness that can worsen with age.

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Last Updated: Jun 13, 2017

Any disease of the joints.

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Last Updated: Jun 13, 2017

Abdominal swelling caused by accumulation of fluid, most often related to liver disease.

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Last Updated: Jun 13, 2017

A developmental disorder affecting ability to effectively socialize and communicate.

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Last Updated: Jun 13, 2017

Lack of oxygen to the brain.

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Last Updated: Jun 13, 2017

A lung infection caused by unintentional inhalation of food, drink, vomit, or saliva.

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Last Updated: Jun 13, 2017

Eyestrain, or eye fatigue.

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Last Updated: May 25, 2018

A condition in which a person's airways narrow and swell and produce extra mucus.

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Last Updated: Jun 13, 2017

An imperfection in the eye's curvature.

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Last Updated: Jun 13, 2017

Impaired balance or coordination, can be due to damage to brain, nerves, or muscles.

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Last Updated: May 25, 2018

Complete or partial collapse of a lung or a section (lobe) of a lung.

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Last Updated: Jun 13, 2017

A mass of fats, cholesterol, and other substances (plaque) in an artery.

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Last Updated: Jun 13, 2017

The buildup of fats, cholesterol, and other substances in and on the artery walls.

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Last Updated: Jun 13, 2017

An itchy inflammation of the skin (eczema).

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Last Updated: Apr 25, 2018

An irregular, often rapid heart rate that commonly causes poor blood flow.

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Last Updated: Jun 13, 2017

A condition in which the heart's upper chambers (atria) beat too quickly.

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Last Updated: Jun 13, 2017

A birth defect that causes a hole in the wall between the heart's upper chambers (atria).

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Last Updated: Jun 13, 2017

Wasting or degeneration of cells, tissues or organs, caused by a number of conditions.

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Last Updated: May 25, 2018

A condition marked by hyperactivity, impulsiveness, and trouble keeping attention.

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Last Updated: Jun 13, 2017

A chronic condition including attention difficulty, hyperactivity, and impulsiveness.

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Last Updated: Jun 13, 2017

A lung infection (pneumonia) with atypical symptoms.

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Last Updated: Jun 13, 2017

A disorder affecting the ability to understand speech.

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Last Updated: Jun 13, 2017

Symptoms or sensations, such as flashing lights or zigzag lines, which typically precede migraine headache, seizure, or other neurological events.

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Last Updated: May 25, 2018

A serious developmental disorder that impairs the ability to communicate and interact.

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Last Updated: Jun 13, 2017

A condition in which the immune system attacks the thyroid gland.

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Last Updated: Jun 13, 2017

The death of bone tissue due to a lack of blood supply.

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Last Updated: Jun 13, 2017

A lack of the recommended blood levels of 1 or more essential vitamins.

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Last Updated: Jun 13, 2017

A disorder characterized by social discomfort and avoidance of interpersonal contact.

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Last Updated: Jun 13, 2017

An injury in which a body part is ripped or torn away.

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Last Updated: Jun 13, 2017

A complete absence of sperm from the fluid ejaculated during orgasm (semen).

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Last Updated: Jun 13, 2017

Elevated levels of urea and other nitrogen compounds in the blood.

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Last Updated: May 24, 2018

B

Red bumps that appear on a baby's cheeks, nose, and forehead.

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Last Updated: Jun 13, 2017

Predictable periods of significant distress in an otherwise well-fed, healthy baby.

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Last Updated: May 25, 2018

Physical discomfort occurring anywhere on the spine or back, ranging from mild to disabling.

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Last Updated: May 26, 2018

An intensely painful infection in a joint.

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Last Updated: Jun 13, 2017

An inflammation of the vagina due to bacterial overgrowth.

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Last Updated: Jun 13, 2017

A fluid-filled cyst behind the knee.

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Last Updated: Jun 13, 2017

Inflammation of the foreskin and head of the penis.

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Last Updated: Jun 13, 2017

Damage to the lower portion of the tube that connects the mouth and stomach (esophagus).

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Last Updated: May 24, 2018

A fluid-filled swelling (cyst) in the Bartholin's glands, which lubricate the vagina.

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Last Updated: Jun 13, 2017

A type of skin cancer that begins in the basal cells.

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Last Updated: Sep 14, 2019

An invasion of a type of bug that hides in beds, biting humans to feed on their blood.

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Last Updated: Jun 13, 2017

An injury caused by a bee's venom.

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Last Updated: Jun 13, 2017

A rare disorder causing inflammation in blood vessels.

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Last Updated: Jun 13, 2017

Sudden weakness in the muscles on 1 side of the face.

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Last Updated: Jun 13, 2017

Brief episodes of dizziness and a sensation of spinning with certain head movements.

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Last Updated: Jun 13, 2017

Age-associated prostate gland enlargement that can cause urination difficulty.

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Last Updated: Jun 13, 2017

A disease in which the body doesn't have enough vitamin B-1 (thiamin).

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Last Updated: Jun 13, 2017

A type of inherited blood disorder.

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Last Updated: Jun 13, 2017

When the aortic valve has 2 flaps instead of 3.

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Last Updated: Jun 13, 2017

Pain that occurs when a gallstone is being passed and is blocking a bile duct, typically comes and goes in a fairly regular pattern.

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Last Updated: May 25, 2018

Frequently consuming unusually large amounts of food in one sitting and feeling that eating behavior is out of control.

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Last Updated: May 24, 2018

A type of bipolar disorder characterized by depressive and hypomanic episodes.

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Last Updated: Jun 13, 2017

A disorder associated with mood swings ranging from depressive lows to manic highs.

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Last Updated: Jun 13, 2017

A condition in children marked by intense mood swings.

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Last Updated: Jun 13, 2017

Bird flu is a type of flu that rarely infects humans, but when it does, it's often deadly.

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Last Updated: Jun 13, 2017

A skin abnormality that’s present when, or develops soon after, a baby is born.

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Last Updated: May 26, 2018

A condition caused by bleeding under the skin around the eye, often resulting from an injury.

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Last Updated: Jun 13, 2017

An open pore clogged with oil, which has turned brown when exposed to the air.

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Last Updated: May 24, 2018

Temporary loss of vision and consciousness.

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Last Updated: May 26, 2018

Cancer that begins in the bladder.

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Last Updated: Jun 13, 2017

The release of blood from a broken blood vessel, either inside or outside the body.

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Last Updated: May 25, 2018

Inflamed, irritated gums that bleed easily.

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Last Updated: May 25, 2018

An inflammation of the eyelid that affects the eyelashes or tear production.

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Last Updated: Jun 13, 2017

Occurs when a gestational sac develops without an embryo.

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Last Updated: Jun 13, 2017

Complete or partial loss of vision.

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Last Updated: Jun 13, 2017

An area of skin covered by a raised, fluid-filled bubble.

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Last Updated: May 25, 2018

A buildup of gas in the stomach and intestines.

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Last Updated: May 25, 2018

A bump on the skin that's filled with blood.

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Last Updated: Jun 13, 2017

Blood can appear with bowel movements because of irritation, constipation, hemorrhoids, digestive conditions, or colon cancer.

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Last Updated: May 25, 2018

Any type of disease that spreads through exposure to human blood.

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Last Updated: Jun 13, 2017

Multiple bluish or purplish marks on a baby’s skin due to formation of blood cell clusters.

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Last Updated: May 26, 2018

Decreased clarity or sharpness in vision.

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Last Updated: May 25, 2018

A mental illness involving obsessive focus on a perceived flaw in appearance.

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Last Updated: Jun 13, 2017

A condition in which tiny insects infest the skin.

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Last Updated: Jun 13, 2017

Odor caused by the combination of sweat and bacteria normally found on the skin.

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Last Updated: May 25, 2018

Any type of condition or disease that affects the bones.

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Last Updated: Jun 13, 2017

A complete or partial break in a bone.

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Last Updated: Jun 13, 2017

When the body doesn't make new bone as quickly as it reabsorbs old bone.

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Last Updated: Jun 13, 2017

A condition that occurs when cancer cells spread from their original site to a bone.

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Last Updated: Jun 13, 2017

A bony growth that develops on the edge of a bone, sometimes causing symptoms.

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Last Updated: May 24, 2018

A mass of unusual cells growing in a bone. Most bone tumors aren't cancerous.

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Last Updated: Jun 13, 2017

A mental disorder marked by emotional instability and severely distorted self-image.

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Last Updated: Jun 13, 2017

The state of feeling disinterested in one's surroundings, having nothing to do, or feeling that life is dull.

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Last Updated: May 25, 2018

A rare poisoning caused by toxins produced by Clostridium botulinum bacteria.

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Last Updated: Jun 13, 2017

A brain disorder in adult cattle that may be spread to humans through diseased meat.

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Last Updated: Jun 13, 2017

Slower-than-expected heart rate, generally beating fewer than 60 beats per minute.

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Last Updated: May 25, 2018

The destruction or deterioration of brain cells.

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Last Updated: May 26, 2018

A condition in which there's no measurable activity in the brain and brainstem.

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Last Updated: Jun 13, 2017

An emergency condition in which a ruptured blood vessel causes bleeding in the brain.

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Last Updated: Jun 13, 2017

A cancerous or noncancerous mass or growth of abnormal cells in the brain.

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Last Updated: Jun 13, 2017

A cancer that forms in the cells of the breasts.

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Last Updated: Jun 13, 2017

A fluid-filled sac in the breast, which usually isn't cancerous.

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Last Updated: Jun 13, 2017

A growth that develops within the breast tissue.

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Last Updated: May 25, 2018

Tightness, tenderness or sharp pain in one or both breasts that occurs commonly and usually doesn't mean anything serious is wrong.

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Last Updated: May 26, 2018

A broken nose.

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Last Updated: Jun 13, 2017

A condition in which the lungs' airways become damaged, making it hard to clear mucus.

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Last Updated: Jun 13, 2017

An inflammatory bronchial reaction in young children and infants.

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Last Updated: Jun 13, 2017

Inflammation of the lining of bronchial tubes, which carry air to and from the lungs.

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Last Updated: Apr 25, 2018

An infection spread from animals to people, mostly by unpasteurized dairy products.

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Last Updated: Sep 12, 2019

A potentially life-threatening heart rhythm disorder.

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Last Updated: Jun 13, 2017

Blood or bleeding under the skin due to trauma of any kind; typically black and blue at first, with color changes as healing progresses.

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Last Updated: May 25, 2018

Grinding, clenching, or gnashing of the teeth.

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Last Updated: May 24, 2018

A rare but serious bacterial infection that's transmitted by fleas.

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Last Updated: Jun 13, 2017

A serious eating disorder marked by binging, followed by methods to avoid weight gain.

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Last Updated: Jun 13, 2017

A rare skin condition causing large, fluid-filled blisters.

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Last Updated: Jun 13, 2017

A bony bump that forms on the joint at the base of the big toe.

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Last Updated: Jun 13, 2017

A fast-growing cancer of the body's lymphatic system.

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Last Updated: Jun 13, 2017

Damage to the skin or deeper tissues caused by sun, fire, electricity, or chemicals.

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Last Updated: Jun 13, 2017

The sensation of painful, burning feet.

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Last Updated: Jun 13, 2017

Ongoing or recurrent burning in the mouth with no obvious cause.

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Last Updated: Jun 13, 2017

Inflammation of the fluid-filled pads (bursae) that act as cushions at the joints.

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Last Updated: Jun 13, 2017

A bacterial infection of the skin and soft tissue.

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Last Updated: Jun 13, 2017

C

Weight loss and muscle wasting that can’t be reversed simply by consuming more calories.

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Last Updated: May 24, 2018

A general state of ill health involving marked weight loss and muscle loss.

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Last Updated: Jun 13, 2017

Thickened layers of skin, often on the hands or feet.

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Last Updated: May 24, 2018

A fungal infection typically on the skin or mucous membranes caused by candida.

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Last Updated: Jun 13, 2017

A small, shallow sore inside the mouth or at the base of the gums.

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Last Updated: Jun 13, 2017

An illness caused by exposure to too much carbon monoxide.

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Last Updated: Jun 13, 2017

A group of pus-filled bumps forming a connected area of infection under the skin.

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Last Updated: Jun 13, 2017

A type of slow-growing cancer that can arise in several places throughout the body.

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Last Updated: Jun 13, 2017

A slow-growing cancerous tumor that can grow in several places throughout the body.

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Last Updated: Jun 13, 2017

A cancer developing from cells that line the skin or inner organs (epithelial cells).

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Last Updated: Jun 13, 2017

Sudden, unexpected loss of heart function, breathing, and consciousness.

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Last Updated: Jun 13, 2017

Improper beating of the heart, whether irregular, too fast, or too slow.

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Last Updated: Jun 13, 2017

Compression of the heart caused by fluid collecting in the sac surrounding the heart.

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Last Updated: Jun 13, 2017

A condition in which the heart suddenly can't pump enough blood.

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Last Updated: Jun 13, 2017

An enlarged heart, which is usually a sign of another condition.

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Last Updated: Jun 13, 2017

A condition of abnormal heart muscle, such as enlarged chambers or thickened walls.

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Last Updated: Jun 13, 2017

A numbness and tingling in the hand and arm caused by a pinched nerve in the wrist.

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Last Updated: Jun 13, 2017

An infection of the lymph nodes caused by a scratch or bite from a cat.

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Last Updated: Jun 13, 2017

Clouding of the normally clear lens of the eye.

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Last Updated: Jun 13, 2017

Inflammation of a mucous membrane.

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Last Updated: Jun 13, 2017

A group of movement abnormalities associated with mental illness.

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Last Updated: Jun 13, 2017

A serious condition in which the nerves at the end of the spinal cord are compressed.

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Last Updated: Jun 13, 2017

A deformity of the outer ear that may occur after injury to the ear.

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Last Updated: Jun 13, 2017

An immune reaction to eating gluten, a protein found in wheat, barley, and rye.

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Last Updated: Jun 13, 2017

Lumpy, dimpled flesh on thighs, hips, buttocks, and belly.

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Last Updated: Jun 13, 2017

A common and potentially serious bacterial skin infection.

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Last Updated: Jun 13, 2017

Swelling of the brain.

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Last Updated: Jun 13, 2017

A disorder of movement, muscle tone, or posture.

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Last Updated: Jun 13, 2017

Cancer of the cervix, the lower part of the uterus connected to the vagina.

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Last Updated: Jul 30, 2019

The development of abnormal cells in the narrow neck of a woman's uterus (the cervix).

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Last Updated: Jun 13, 2017

Inflammation of the cervix.

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Last Updated: Jun 13, 2017

An infectious disease caused by a parasite found in the feces of the triatomine bug.

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Last Updated: Jun 13, 2017

A slow-growing, inflammatory lump in the tear gland of the eyelid.

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Last Updated: Jun 13, 2017

A group of hereditary disorders that damage the nerves in the arms and legs.

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Last Updated: Jun 13, 2017

A sudden, involuntary contraction of one or more muscles (cramp), often in the legs.

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Last Updated: Jun 13, 2017

Inflammation of the lips.

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Last Updated: Jun 13, 2017

Damage to the skin and the tissues below it caused by chemical contact.

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Last Updated: Jun 13, 2017

A common, noncancerous skin growth.

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Last Updated: Jun 13, 2017

An infection of the lungs or airways (bronchi).

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Last Updated: Jun 13, 2017

Discomfort in the chest including a dull ache, a crushing or burning feeling, a sharp stabbing pain, and pain that radiates to the neck or shoulder.

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Last Updated: May 26, 2018

A highly contagious viral infection causing an itchy, blister-like rash on the skin.

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Last Updated: Jun 13, 2017

A viral infection transmitted by mosquitoes.

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Last Updated: Jun 13, 2017

Skin sores or bumps that occurs after exposure to very cold temperatures.

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Last Updated: Jun 13, 2017

A condition in which a child weighs well above normal for his or her age and height.

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Last Updated: Jun 13, 2017

The feeling of being cold, though not necessarily in a cold environment, often accompanied by shivering.

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Last Updated: May 25, 2018

A common sexually transmitted infection that may not cause symptoms.

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Last Updated: Jun 13, 2017

Inability to breathe caused by a blockage in the throat or windpipe.

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Last Updated: Jun 13, 2017

A cancer in the slender tubes that carry the digestive fluid bile through the liver.

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Last Updated: May 25, 2019

Infection of the common bile duct.

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Last Updated: Jun 13, 2017

Inflammation of the gallbladder, a small, digestive organ beneath the liver.

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Last Updated: Jun 13, 2017

A bacterial disease causing severe diarrhea and dehydration, usually spread in water.

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Last Updated: Jun 13, 2017

Any condition in which the flow of bile from the liver stops or slows.

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Last Updated: Jun 13, 2017

A cyst in the middle ear.

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Last Updated: Jun 13, 2017

A form of arthritis with sudden, painful swelling in 1 or more joints.

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Last Updated: Jun 13, 2017

Damage to the cartilage under the kneecap.

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Last Updated: May 24, 2018

A type of cancer of the womb (uterus) that spreads rapidly.

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Last Updated: Jun 13, 2017

Extreme fatigue that can't be explained by an underlying medical condition.

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Last Updated: Jun 13, 2017

A condition that causes increasing weakness in the legs and arms.

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Last Updated: Jun 13, 2017

A type of cancer of the blood and bone marrow.

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Last Updated: Jun 13, 2017

A slowly progressing, uncommon type of blood cell cancer that begins in bone marrow.

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Last Updated: Jun 13, 2017

A group of lung diseases that block airflow and make it difficult to breathe.

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Last Updated: Jun 13, 2017

Persistent pain that lasts weeks to years.

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Last Updated: Jun 13, 2017

Long-term inflammation of the pancreas.

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Last Updated: Jun 13, 2017

The gradual loss of kidney function.

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Last Updated: Jun 13, 2017

A long-term condition in which leg veins don't return blood properly to the heart.

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Last Updated: Jun 13, 2017

Scarring of the liver caused by a liver disease or condition.

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Last Updated: Jun 13, 2017

Pain, commonly in the legs, caused by too little blood flow, usually during exercise. Often indicates peripheral artery disease.

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Last Updated: May 25, 2018

A break in the bone connecting the breastbone and shoulder.

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Last Updated: Jun 13, 2017

Openings or splits in the roof of the mouth.

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Last Updated: Jun 13, 2017

Inflammation of the colon caused by the bacteria Clostridium difficile.

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Last Updated: Jun 13, 2017

A common birth defect in which the foot is twisted out of shape or position.

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Last Updated: Jun 13, 2017

A rare condition in which headaches occur in patterns or clusters.

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Last Updated: Jun 13, 2017

A condition in which the blood doesn't clot properly.

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Last Updated: Jun 13, 2017

A narrowing of the large blood vessel (aorta) that leads from the heart.

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Last Updated: Apr 25, 2018

An infection with the fungus coccidioides, sometimes called valley fever.

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Last Updated: Jun 13, 2017

Pain in or around the bony structure at the bottom of the spine (coccyx, or tailbone).

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Last Updated: May 26, 2018

Inflammation of the large intestine (colon).

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Last Updated: Jun 13, 2017

A common wrist fracture.

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Last Updated: Jun 13, 2017

A reduced ability to distinguish between certain colors.

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Last Updated: Jun 13, 2017

A cancer of the colon or rectum, which may begin as noncancerous polyps.

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Last Updated: Jun 13, 2017

A period of prolonged unconsciousness brought on by illness or injury.

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Last Updated: Jun 13, 2017

An open (blackhead) or closed (whitehead) skin pore or hair follicle clogged with oil, dead skin cells, and bacteria.

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Last Updated: May 25, 2018

A common viral infection of the nose and throat.

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Last Updated: Jun 13, 2017

A common type of pneumonia that occurs outside of health care facilities.

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Last Updated: Jun 13, 2017

Too much pressure in the tissue compartments that separate muscle groups.

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Last Updated: Jun 13, 2017

Chronic arm or leg pain developing after injury, surgery, stroke, or heart attack.

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Last Updated: Jun 13, 2017

Thoughts, urges, or behaviors that persist despite negatively affecting health, job, or relationships.

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Last Updated: May 25, 2018

A persistent difficulty discarding or parting with possessions because of a perceived need to save them.

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Last Updated: May 26, 2018

Brain injury caused by a blow to the head or a violent shaking of the head and body.

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Last Updated: Jun 13, 2017

A group of emotional and behavioral conditions in children and teens.

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Last Updated: Jun 13, 2017

Hearing loss caused by a physical condition in the outer or middle ear.

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Last Updated: Jun 13, 2017

A group of genetic conditions limiting hormone production in the adrenal glands.

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Last Updated: Jun 13, 2017

An abnormality in the heart that develops before birth.

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Last Updated: Jun 13, 2017

A condition that occurs in a baby whose mother is infected with the rubella virus.

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Last Updated: Jun 13, 2017

Two babies born physically connected to each other.

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Last Updated: Jun 13, 2017

Inflammation or infection of the outer membrane of the eyeball and the inner eyelid.

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Last Updated: Jun 13, 2017

A group of disorders involving the connective tissue.

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Last Updated: Jun 13, 2017

Infrequent bowel movements, and small, hard-to-pass, stool.

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Last Updated: May 26, 2018

A skin rash caused by contact with a substance.

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Last Updated: Jun 13, 2017

Tightening or shortening of muscle, commonly in reference to uterine contractions during childbirth.

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Last Updated: May 24, 2018

A condition in which emotional stress is converted to physical symptoms.

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Last Updated: Jun 13, 2017

A loss of consciousness accompanied by violent muscle contractions.

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Last Updated: May 25, 2018

Thick, hardened layers of skin caused by friction and pressure.

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Last Updated: Jun 13, 2017

A scratch or cut on the cornea.

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Last Updated: Jun 13, 2017

Damage to or disease in the heart's major blood vessels.

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Last Updated: Jun 13, 2017

An inflammation of the cartilage that connects a rib to the breastbone.

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Last Updated: Jun 13, 2017

A sudden, forceful hacking sound to release air and clear an irritation in the throat or airway.

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Last Updated: May 25, 2018

Crusting and white or yellow scales on a baby's scalp.

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Last Updated: Jun 13, 2017

A painful, involuntary contraction of a muscle.

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Last Updated: May 26, 2018

A birth condition in which 1 or more joints in a baby's skull close too soon.

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Last Updated: Jun 13, 2017

Crackling or grating sound caused by bones rubbing against each other, also called creaky joints.

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Last Updated: May 24, 2018

A degenerative brain disorder that leads to dementia and death.

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Last Updated: Jun 13, 2017

A chronic inflammatory bowel disease that affects the lining of the digestive tract.

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Last Updated: Jun 13, 2017

An upper airway infection that blocks breathing and has a distinctive barking cough.

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Last Updated: Jun 13, 2017

Shedding tears in response to certain emotions or pain.

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Last Updated: May 26, 2018

A testicle that hasn't moved into the bag of skin below the penis before birth.

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Last Updated: Jun 13, 2017

A condition that occurs from exposure to high cortisol levels for a long time.

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Last Updated: Jul 2, 2019

A disease caused by infection with leishmania parasites.

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Last Updated: Jun 13, 2017

Bluish or grayish color of the skin, nails, lips, or around the eyes.

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Last Updated: Jun 13, 2017

A mood disorder that causes emotional highs and lows.

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Last Updated: Jun 13, 2017

An abnormal, usually noncancerous growth filled with liquid or a semisolid substance, sometimes causing pain.

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Last Updated: May 24, 2018

An inherited life-threatening disorder that damages the lungs and digestive system.

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Last Updated: Jun 13, 2017

A tapeworm infection that affects the brain, muscle, and other tissues.

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Last Updated: Jun 13, 2017

A bulge of the bladder into the vagina.

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Last Updated: Jun 13, 2017

D

An abnormal immune system response to milk and milk products.

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Last Updated: Jun 13, 2017

A congenital brain condition affecting the part of the brain controlling movement.

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Last Updated: Jun 13, 2017

A painful condition affecting the tendons on the thumb side of the wrist.

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Last Updated: Jun 13, 2017

Total or significant loss of hearing.

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Last Updated: Jun 13, 2017

A blood clot in a deep vein, usually in the legs.

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Last Updated: Jun 13, 2017

Distortion or disfigurement of any part of the body.

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Last Updated: May 26, 2018

Osteoarthritis of the spine, usually in the neck or lower back.

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Last Updated: Jun 13, 2017

A significant loss of body fluid that impairs normal body functions.

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Last Updated: May 24, 2018

Serious disturbance in mental abilities that results in confused thinking and reduced awareness of surroundings.

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Last Updated: Jun 13, 2017

Severe alcohol withdrawal symptoms such as shaking, confusion, and hallucinations.

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Last Updated: Jun 13, 2017

A belief or altered reality that is persistently held despite evidence or agreement to the contrary, generally in reference to a mental disorder.

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Last Updated: May 25, 2018

A group of thinking and social symptoms that interferes with daily functioning.

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Last Updated: Jun 13, 2017

Any condition that damages the sheath that protects the brain and spinal nerves.

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Last Updated: Jun 13, 2017

A mosquito-borne disease occurring in tropical and subtropical areas.

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Last Updated: Jun 13, 2017

A pocket of pus in a tooth caused by an infection.

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Last Updated: Jun 13, 2017

Permanently damaged areas in teeth that develop into tiny holes (cavities).

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Last Updated: Jun 13, 2017

A sticky film that coats teeth and contains bacteria.

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Last Updated: Jun 13, 2017

The persistent feeling of observing oneself from outside one’s body or having a sense that one’s surroundings aren't real.

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Last Updated: May 25, 2018

A persistent feeling of sadness and loss of interest.

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Last Updated: May 25, 2018

Inflammation of the skin with many causes and forms, often causing itching and a rash.

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Last Updated: Jun 13, 2017

A chronic, very itchy skin rash made up of bumps and blisters.

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Last Updated: Jun 13, 2017

A condition in which scratching the skin causes raised, hive-like lines.

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Last Updated: Jun 13, 2017

An inflammatory disease marked by muscle weakness and skin rash.

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Last Updated: Jun 13, 2017

A small, noncancerous lump (cyst) in the skin, often near the eye, present at birth.

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Last Updated: Jun 13, 2017

An unintended damage to and loss of the upper layer of skin.

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Last Updated: May 23, 2018

A childhood developmental disorder marked by clumsiness in otherwise healthy kids.

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Last Updated: Jun 13, 2017

A disorder caused by a defect in chromosome 22.

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Last Updated: Jun 13, 2017

A disorder of salt and water metabolism marked by intense thirst and heavy urination.

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Last Updated: Jun 13, 2017

A group of diseases that result in too much sugar in the blood, or high blood glucose.

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Last Updated: Jun 13, 2017

An open sore or wound that occurs in people who have diabetes.

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Last Updated: Jun 13, 2017

A serious diabetes complication where the body produces excess blood acids (ketones).

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Last Updated: Jun 13, 2017

A type of nerve damage that can occur with diabetes.

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Last Updated: Jun 13, 2017

A complication of diabetes that affects the eyes.

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Last Updated: Jun 13, 2017

Loose, watery bowel movements that may occur frequently and with a sense of urgency.

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Last Updated: May 25, 2018

Loose, watery stools that occur more frequently than usual.

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Last Updated: Jun 13, 2017

A condition in which the large abdominal muscles separate during pregnancy.

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Last Updated: Jun 13, 2017

A condition in which the heart's left ventricle can't relax or fill fully.

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Last Updated: Jun 13, 2017

Managing consumption of food and drink with the intent to lose, gain, or maintain weight.

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Last Updated: May 25, 2018

A common, fast-growing form of blood cancer.

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Last Updated: Jun 13, 2017

A disease of the heart muscle, primarily affecting the left ventricle.

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Last Updated: Jun 13, 2017

A serious infection of the nose and throat.

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Last Updated: Jun 13, 2017

Seeing two images of an object, also known as double vision.

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Last Updated: Jun 13, 2017

An injury in which the upper arm bone comes out of the shoulder blade socket.

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Last Updated: Jun 13, 2017

An injury in which the hipbone is displaced from its normal position.

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Last Updated: Jun 13, 2017

Condition affecting the blood's ability to clot and stop bleeding.

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Last Updated: Jun 13, 2017

Disconnection and lack of continuity between thoughts, memories, surroundings, actions, and identity.

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Last Updated: May 25, 2018

A disorder characterized by the presence of 2 or more distinct personality states.

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Last Updated: Jun 13, 2017

A common condition in which a large bone near the wrist breaks.

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Last Updated: Jun 13, 2017

An inflammation or infection in 1 or more small pouches in the digestive tract.

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Last Updated: Jun 13, 2017

A condition in which small, bulging pouches develop in the digestive tract.

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Last Updated: Jun 13, 2017

A sac that develops in the lining of the bowel or bladder.

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Last Updated: Jun 13, 2017

Altered sense of balance and place, possibly described as lightheaded, feeling faint, or as if head is spinning.

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Last Updated: May 25, 2018

Bites from a pet or wild dog.

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Last Updated: Jun 13, 2017

A genetic chromosome 21 disorder causing developmental and intellectual delays.

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Last Updated: Jun 13, 2017

A parasitic infection occurring in parts of Africa without access to safe water.

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Last Updated: Jun 13, 2017

The flow of saliva outside the mouth.

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Last Updated: May 26, 2018

Death caused by suffocation when water or other liquid fills the lungs.

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Last Updated: Jun 13, 2017

Physical and mental symptoms that occur after stopping or reducing intake of a drug.

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Last Updated: Jun 13, 2017

Decreased moisture in the body.

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Last Updated: May 25, 2018

An inherited disorder of progressive muscular weakness, typically in boys.

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Last Updated: Jun 13, 2017

A type of breast cancer that starts in a milk duct of the breast.

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Last Updated: Jun 13, 2017

A gradual thickening and tightening of tissue under the skin in the hand.

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Last Updated: Jun 13, 2017

Short height that results from a genetic or medical condition.

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Last Updated: Jun 13, 2017

Weakness in the muscles used for speech, which often causes slowed or slurred speech.

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Last Updated: Jun 13, 2017

A dysfunction of the nerves that regulate nonvoluntary body functions, such as heart rate, blood pressure, and sweating.

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Last Updated: May 24, 2018

Inflammation of the intestines accompanied by bloody diarrhea.

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Last Updated: Jun 13, 2017

An altered or impaired sense of taste.

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Last Updated: May 25, 2018

A condition in which tiny, fluid-filled blisters appear on the palms and fingers.

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Last Updated: Jun 13, 2017

A condition in which tiny, fluid-filled blisters appear on the palms and fingers.

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Last Updated: Jun 13, 2017

Uncontrolled, involuntary muscle movement.

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Last Updated: May 25, 2018

A learning disorder characterized by difficulty reading.

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Last Updated: Jun 13, 2017

Abnormally elevated cholesterol or fats (lipids) in the blood.

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Last Updated: Jun 13, 2017

Cramps and pelvic pain with menstruation, with common causes such as heavy flow, passing clots, uterine fibroids, or endometriosis.

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Last Updated: May 26, 2018

Persistent or recurrent genital pain that occurs just before, during, or after intercourse.

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Last Updated: May 25, 2018

Difficulty swallowing foods or liquids, arising from the throat or esophagus, ranging from mild difficulty to complete and painful blockage.

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Last Updated: May 26, 2018

Difficulty speaking or using words properly.

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Last Updated: May 25, 2018

An impairment or change in voice quality that affects the ability to speak or sing.

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Last Updated: May 23, 2018

A state of feeling uneasy, unhappy, or unwell.

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Last Updated: May 25, 2018

Shortness of breath.

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Last Updated: May 25, 2018

A mild but long-term form of depression.

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Last Updated: Jun 13, 2017

Involuntary muscle contractions that cause repetitive or twisting movements.

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Last Updated: Jun 13, 2017

Discomfort, pain, or burning when urinating.

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Last Updated: May 25, 2018

E

Pain in the inner or outer ear that may interfere with ability to hear, often caused by excess fluid and infection.

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Last Updated: May 25, 2018

A virus that causes severe bleeding, organ failure, and can lead to death.

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Last Updated: Jun 13, 2017

A large, blue or purplish bruise under the skin that changes color over time before fading.

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Last Updated: May 25, 2018

Seizures in a pregnant woman or in a woman shortly after childbirth.

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Last Updated: Jun 13, 2017

A pregnancy in which the fertilized egg implants outside the uterus.

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Last Updated: Jun 13, 2017

Excess fluid trapped in soft tissue, most noticeably occurs in the hands, ankles, and feet.

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Last Updated: May 25, 2018

A condition that causes severe developmental delays due to an extra chromosome 18.

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Last Updated: Jun 13, 2017

A common allergy in which the body reacts to the consumption of eggs.

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Last Updated: Jun 13, 2017

A group of inherited disorders that mostly affect the skin, joints, and blood vessels.

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Last Updated: Jun 13, 2017

Physical discomfort in the elbow joint, or in the muscles, tendons, and ligaments supporting it.

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Last Updated: May 25, 2018

Injury to the body from direct contact with a high-voltage source.

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Last Updated: Jun 13, 2017

Swelling of the limbs caused by a blockage in the lymphatic system.

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Last Updated: Jun 13, 2017

The state of being excessively thin and wasted.

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Last Updated: May 25, 2018

A blockage of blood supply to part of the brain caused by a clot or debris (embolus).

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Last Updated: Jun 13, 2017

A sudden blocking of an artery.

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Last Updated: Jun 13, 2017

Inflammation of the brain, often due to infection.

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Last Updated: Apr 25, 2018

A broad term for any brain disease that alters brain function or structure.

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Last Updated: Jun 13, 2017

A condition in which a child resists having bowel movements, causing impacted stool to collect in the colon and rectum and lead to leakage.

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Last Updated: May 25, 2018

An infection of the heart's inner lining, usually involving the heart valves.

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Last Updated: Jun 13, 2017

A type of cancer that begins in the lining of the womb (uterus).

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Last Updated: Jun 25, 2019

A usually noncancerous growth attached to the inner wall of the womb (uterus).

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Last Updated: Jun 13, 2017

A disorder in which tissue that normally lines the uterus grows outside the uterus.

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Last Updated: Jun 13, 2017

Loss of bladder control.

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Last Updated: May 26, 2018

A high level of disease-fighting white blood cells known as eosinophils in the blood.

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Last Updated: May 25, 2018

Inflammation or injury to the tube connecting the mouth to the stomach.

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Last Updated: Jun 13, 2017

Clusters of pigment cells in the skin, also known as freckles.

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Last Updated: May 25, 2018

A noncancerous small bump beneath the skin.

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Last Updated: Jun 13, 2017

A group of conditions in which injury, heat, or friction makes the skin blister.

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Last Updated: Jun 13, 2017

Inflammation of the tube at the back of the testicle that stores and carries sperm.

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Last Updated: Jun 13, 2017

An accumulation of blood between the skull and brain.

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Last Updated: Jun 13, 2017

A condition in which the lid over the windpipe swells, blocking air to the lungs.

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Last Updated: Jun 13, 2017

A disorder in which nerve cell activity in the brain is disturbed, causing seizures.

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Last Updated: Jun 13, 2017

Occurs when a man can't get or keep an erection firm enough for sexual intercourse.

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Last Updated: Apr 25, 2018

Excess gas in the stomach or upper intestine released from the mouth, also known as burping or belching.

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Last Updated: May 26, 2018

A skin infection that occurs mainly on the face and legs.

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Last Updated: Jun 13, 2017

Redness of the skin, either in a limited area or all over.

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Last Updated: May 26, 2018

A skin condition mostly due to an infection.

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Last Updated: Jun 13, 2017

A painful disorder characterized by tender bumps (nodules) under the skin.

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Last Updated: Jun 13, 2017

Fear of the color red, often accompanied by fear of blood or blushing.

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Last Updated: May 24, 2018

Dead tissue that eventually sloughs off healthy skin after an injury.

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Last Updated: May 26, 2018

Cancer of the tube that runs from the throat to the stomach (esophagus).

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Last Updated: Jun 13, 2017

Abnormal veins in the lower part of the tube running from the throat to the stomach.

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Last Updated: Jun 13, 2017

Inflammation that damages the tube running from the throat to the stomach (esophagus).

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Last Updated: Jun 13, 2017

A nervous system disorder that causes rhythmic shaking.

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Last Updated: Jun 13, 2017

An extreme, unrealistic feeling of physical and emotional well-being, feeling "high."

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Last Updated: May 24, 2018

A cancer that most often occurs in and around the bones.

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Last Updated: Jun 13, 2017

A widely spread out rash.

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Last Updated: May 24, 2018

Bulging of the eyes, which causes the eyes to move out of the sockets in one or both eyes.

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Last Updated: May 25, 2018

Fluid that has leaked out of blood vessels into or on nearby tissues.

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Last Updated: May 26, 2018

Physical discomfort in the eye's surface or deep within the eye, ranging from a slight irritation to severe pain.

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Last Updated: May 25, 2018

Involuntary spasms of the eyelid muscles.

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Last Updated: May 25, 2018

F

Inherited blood-clotting disorder due to a mutation of the blood's factor V protein.

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Last Updated: Jun 13, 2017

A condition in which a woman who isn't pregnant believes that she is.

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Last Updated: Jun 13, 2017

A vision condition in which objects far away are seen more clearly than objects close up.

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Last Updated: Jun 13, 2017

Involuntary twitching of voluntary muscles.

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Last Updated: May 26, 2018

Feeling overtired, with low energy and a strong desire to sleep that interferes with normal daily activities.

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Last Updated: May 25, 2018

An increased buildup of fat in the liver.

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Last Updated: Jun 13, 2017

An unpleasant feeling triggered by the perception of danger, real or imagined.

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Last Updated: May 26, 2018

Convulsion in a child that may be caused by a spike in body temperature (fever).

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Last Updated: Jun 13, 2017

Hardened stool that's stuck in the rectum or lower colon due to chronic constipation.

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Last Updated: Jun 13, 2017

Physical and mental damage in a child due to alcohol exposure while in the womb.

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Last Updated: Jun 13, 2017

A temporary increase in average body temperature of 98.6 F (37 C).

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Last Updated: Jun 13, 2017

A prolonged fever without an established cause despite testing.

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Last Updated: Jun 13, 2017

A noncancerous breast tumor that most often occurs in young women.

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Last Updated: Jun 13, 2017

Noncancerous changes that give a breast a lumpy or ropelike texture.

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Last Updated: Jun 13, 2017

A noncancerous tumor made up of fibrous or connective tissue.

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Last Updated: Jun 13, 2017

A widespread muscle and bone pain and tenderness.

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Last Updated: Jun 13, 2017

The formation of fibrous tissue.

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Last Updated: Jun 13, 2017

A formation of fibrous tissues.

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Last Updated: May 24, 2018

A common and highly contagious childhood ailment causing a distinctive face rash.

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Last Updated: Jun 13, 2017

Infection with a parasite called a filarial worm.

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Last Updated: Jun 13, 2017

A pregnancy in the first three months.

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Last Updated: Jun 13, 2017

A dry, sore, irritated, or cracked nipple.

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Last Updated: Jun 13, 2017

An abnormal connection between organs.

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Last Updated: Jun 13, 2017

Loose and floppy limbs.

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Last Updated: Jun 13, 2017

A condition in which the entire sole of the foot touches the floor when standing.

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Last Updated: Jun 13, 2017

Intestinal gas that’s passed from the anus.

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Last Updated: May 24, 2018

Spots in vision that look like black or gray specks or strings that drift across the eyes.

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Last Updated: Jun 13, 2017

Reddening of the skin.

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Last Updated: May 24, 2018

The most common slow-growing form of non-Hodgkin's lymphoma.

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Last Updated: Jun 13, 2017

Infection of 1 or more of the pockets from which hair grows (follicles).

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Last Updated: Jun 13, 2017

An unpleasant or dangerous immune system reaction after a certain food is eaten.

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Last Updated: Jun 13, 2017

An intense desire for certain foods or flavors.

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Last Updated: May 24, 2018

Digestive problems that occur after a certain food is eaten.

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Last Updated: Jun 13, 2017

Illness caused by food contaminated with bacteria, viruses, parasites, or toxins.

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Last Updated: Jun 13, 2017

Parasitic worm infections that cause severe liver and lung disease.

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Last Updated: Jun 13, 2017

A general term for difficulty lifting the front part of the foot, sometimes called drop foot.

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Last Updated: May 25, 2018

Physical discomfort in the foot.

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Last Updated: May 25, 2018

A genetic condition causing intellectual disability.

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Last Updated: Jun 13, 2017

The need to urinate more often than normal.

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Last Updated: May 25, 2018

Sweating and flushing of a patch of skin near the ear with eating.

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Last Updated: Jun 13, 2017

A condition in which skin and the tissue just below the skin freeze.

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Last Updated: Jun 13, 2017

A painful, pus-filled bump under the skin caused by infected, inflamed hair follicles.

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Last Updated: Sep 11, 2019

G

A condition causing red blood cells to break down during stress or infection.

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Last Updated: Jun 13, 2017

A condition in which the body can't use a simple sugar to produce energy.

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Last Updated: Jun 13, 2017

Conditions affecting the gallbladder, a small organ that helps digestion.

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Last Updated: Jun 13, 2017

A hardened deposit of fluid in the gallbladder, a small organ under the liver.

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Last Updated: Jun 13, 2017

A noncancerous lump, often on the tendons or joints of wrists and hands.

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Last Updated: Jun 13, 2017

Dead tissue caused by an infection or lack of blood flow.

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Last Updated: Jun 13, 2017

Symptoms that occur when undigested stomach contents move into the small bowel.

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Last Updated: Jun 13, 2017

Any of a group of conditions in which the stomach lining is inflamed.

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Last Updated: Jun 13, 2017

An intestinal infection marked by diarrhea, cramps, nausea, vomiting, and fever.

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Last Updated: Jun 13, 2017

Digestive disease in which stomach acid or bile irritates the food pipe lining.

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Last Updated: Jun 13, 2017

A condition in which a hole develops in a digestive organ or tract.

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Last Updated: Jun 13, 2017

A digestive tract tumor that most often occurs in the stomach or small intestine.

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Last Updated: Jun 13, 2017

A condition that affects the stomach muscles and prevents proper stomach emptying.

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Last Updated: Jun 13, 2017

A condition in which part of a newborn's intestines sticks out of the belly at birth.

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Last Updated: Jun 13, 2017

An inherited condition in which an enzyme that breaks down fat doesn't work properly.

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Last Updated: Jun 13, 2017

Severe, ongoing anxiety that interferes with daily activities.

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Last Updated: Jun 13, 2017

A common sexually transmitted infection marked by genital pain and sores.

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Last Updated: Jun 13, 2017

A small bump on the genitals caused by a common sexually transmitted infection.

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Last Updated: Jun 13, 2017

A condition in which the knees stay apart even when standing with feet and ankles together, also known as bowlegs.

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Last Updated: May 24, 2018

A condition that causes harmless tongue patches resembling smooth, red islands.

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Last Updated: Jun 13, 2017

A form of high blood sugar affecting pregnant women.

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Last Updated: Jun 13, 2017

An intestinal infection caused by a giardia parasite.

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Last Updated: Jun 13, 2017

Unusual growth from overproduction of growth hormone during childhood.

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Last Updated: Jun 13, 2017

A mild condition in which the liver doesn't properly process bilirubin.

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Last Updated: Jun 13, 2017

A form of gum disease that causes inflamed gums.

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Last Updated: Jun 13, 2017

A group of eye conditions that can cause blindness.

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Last Updated: Jun 13, 2017

A malignant tumor affecting the brain or spine.

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Last Updated: Jun 13, 2017

A type of tumor that occurs in the brain and spinal cord.

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Last Updated: Jun 13, 2017

The sensation of having a lump or something stuck in the throat.

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Last Updated: Jun 13, 2018

Inflammation of the tiny filters in the kidneys that remove waste from blood.

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Last Updated: Jun 13, 2017

A condition in which the tongue swells, changes color, and looks smooth.

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Last Updated: Jun 13, 2017

Ongoing or recurrent burning in the mouth with no obvious cause.

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Last Updated: Jun 13, 2017

Sensitivity to gluten, a protein found in wheat, barley, and rye.

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Last Updated: Jun 13, 2017

Abnormal enlargement of the butterfly-shaped gland below the Adam's apple (thyroid).

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Last Updated: Jun 13, 2017

A condition that causes pain on the inner side of the elbow.

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Last Updated: Jun 13, 2017

A sexually transmitted bacterial infection that, if untreated, may cause infertility.

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Last Updated: Jun 13, 2017

A form of arthritis characterized by severe pain, redness, and tenderness in joints.

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Last Updated: Jun 13, 2017

A condition that occurs when donor bone marrow or stem cells attack the recipient.

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Last Updated: Jun 13, 2017

A seizure that involves a loss of consciousness and violent muscle contractions.

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Last Updated: Jun 13, 2017

A small area of inflammation in tissue.

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Last Updated: Jun 13, 2017

Ring-patterned red or skin-colored bumps usually on the hands and feet.

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Last Updated: Jun 13, 2017

An immune system disorder of the butterfly-shaped gland in the throat (thyroid).

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Last Updated: Jun 13, 2017

Strep throat, scarlet fever, and related infections caused by group A streptococcus.

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Last Updated: Jun 13, 2017

An infection caused by a common bacterium (group B streptococcus).

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Last Updated: Aug 15, 2019

Soreness in a child's legs that often occurs at night.

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Last Updated: Jun 13, 2017

A condition in which the immune system attacks the nerves.

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Last Updated: Jun 13, 2017

Feeling responsible or regretful for a perceived offense, real or imaginary.

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Last Updated: May 24, 2018

A skin condition of tiny, drop-shaped sores on trunk, arms, legs, and scalp.

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Last Updated: Jun 13, 2017

Swollen male breast tissue caused by a hormone imbalance.

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Last Updated: Jun 13, 2017

H

A serious complication of high blood pressure during pregnancy.

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Last Updated: Jun 13, 2017

Progressive loss of hair from the scalp beyond normal hair loss of less than 100 hair strands a day.

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Last Updated: May 25, 2018

A temporary condition in which the tongue appears dark and furry.

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Last Updated: Apr 25, 2018

A persistent, unpleasant odor in exhaled breath, usually not serious, commonly called bad breath.

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Last Updated: May 25, 2018

A perception of having seen, heard, touched, tasted, or smelled something that wasn't actually there.

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Last Updated: May 25, 2018

A noncancerous tumorlike growth.

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Last Updated: Jun 13, 2017

A foot condition in which the toe has an abnormal bend in the middle joint.

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Last Updated: Jun 13, 2017

A common children's virus causing sores in the mouth and a rash on hands and feet.

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Last Updated: Jun 13, 2017

Unpleasant symptoms that occur after excessive alcohol intake.

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Last Updated: Jun 13, 2017

A group of viruses carried by rodents that can cause serious disease.

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Last Updated: Jun 13, 2017

A condition in which a newborn has hard, thick skin in diamond patterns.

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Last Updated: Jun 13, 2017

When the immune system attacks the butterfly-shaped gland in the neck (thyroid).

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Last Updated: Jun 13, 2017

A group of cancers of the mouth, sinuses, nose, or throat.

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Last Updated: Jun 13, 2017

A condition in which tiny insects infest the scalp.

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Last Updated: Jun 13, 2017

A painful sensation in any part of the head, ranging from sharp to dull, that may occur with other symptoms.

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Last Updated: May 25, 2018

Partial or total loss of hearing in one or both ears.

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Last Updated: May 24, 2018

A chronic condition in which the heart doesn't pump blood as well as it should.

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Last Updated: Jun 13, 2017

Sound of blood flowing through the heart, due to anything from healthy heart exertion during exercise to a diseased heart valve or other abnormality.

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Last Updated: May 26, 2018

Any condition that prevents 1 or more heart valves from working properly.

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Last Updated: Apr 25, 2018

Burning pain or discomfort in the upper chest and midchest, possibly involving the neck and throat, that may worsen when lying down.

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Last Updated: May 26, 2018

Physical discomfort on the back or the underside of the heel that may make walking uncomfortable or difficult.

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Last Updated: May 25, 2018

A bony growth that develops around the heel bone, sometimes causing pain.

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Last Updated: May 25, 2018

A birthmark often appearing as a rubbery, bright red nodule of extra blood vessels.

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Last Updated: Jun 13, 2017

Vomiting blood.

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Last Updated: Jun 13, 2017

Bright red blood in the stool or with bowel movements.

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Last Updated: May 25, 2018

A collection of blood in an organ or tissue, usually from a ruptured blood vessel.

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Last Updated: Jun 13, 2017

Blood in semen.

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Last Updated: May 24, 2018

Blood in the urine may range from very obvious to microscopic and not visible at all.

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Last Updated: May 25, 2018

Muscle weakness or partial paralysis on one side of the body that can affect the arms, legs, and facial muscles.

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Last Updated: Jun 13, 2017

The breakdown of red blood cells.

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Last Updated: May 26, 2018

A condition in which red blood cells are destroyed faster than the body makes them.

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Last Updated: Jun 13, 2017

A condition in which a newborn's blood is damaged by antibodies from the mother.

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Last Updated: Jun 13, 2017

A condition in which a buildup of white blood cells harms the liver and spleen.

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Last Updated: Jun 13, 2017

A disorder in which blood doesn't clot normally.

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Last Updated: Jun 13, 2017

Coughing up blood, in small amounts mixed with sputum brought up by a forceful cough or large amounts of bright red blood, which is more serious.

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Last Updated: May 25, 2018

Internal or external bleeding that may occur anywhere, and depending on the location, may range from a bruise to a life-threatening brain bleed.

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Last Updated: May 24, 2018

Any of a group of infectious diseases that interfere with the blood's ability to clot.

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Last Updated: Jun 13, 2017

Swollen and inflamed veins in the rectum and anus that cause discomfort and bleeding.

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Last Updated: Jun 13, 2017

A disorder causing inflammation and bleeding in the small blood vessels.

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Last Updated: Jun 13, 2017

The loss of brain function when a damaged liver doesn't remove toxins from the blood.

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Last Updated: Jun 13, 2017

An inflammation of the liver.

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Last Updated: Jun 13, 2017

A highly contagious liver infection caused by the hepatitis A virus.

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Last Updated: Jun 13, 2017

A serious liver infection caused by the hepatitis B virus.

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Last Updated: Jun 13, 2017

An infection caused by a virus that attacks the liver and leads to inflammation.

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Last Updated: Jun 13, 2017

The most common form of liver cancer.

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Last Updated: Jun 13, 2017

An enlarged liver.

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Last Updated: May 26, 2018

A bulging of an organ or tissue through an abnormal opening, typically in the belly.

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Last Updated: Jun 13, 2017

A common childhood illness often caused by group A coxsackie viruses.

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Last Updated: Jun 13, 2017

Infection with the herpes simplex virus around the border of the lips (oral herpes).

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Last Updated: Jun 13, 2017

A virus causing contagious sores most often around the mouth or on the genitals.

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Last Updated: Jun 13, 2017

A reactivation of the chickenpox virus in the body, causing a painful rash (shingles).

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Last Updated: Jun 13, 2017

A condition in which the colored part of the eye (iris) is multicolored.

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Last Updated: Jun 13, 2017

A condition in which part of the stomach pushes up through the diaphragm muscle.

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Last Updated: Apr 25, 2018

Involuntary spasms of the diaphragm, usually short-lived and not a sign of something serious.

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Last Updated: May 26, 2018

A chronic skin condition featuring lumps in places such as the armpits or groin.

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Last Updated: Jun 13, 2017

A mild version of a developmental condition affecting a child's ability to interact.

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Last Updated: Jun 13, 2017

An injury in which the hipbone is displaced from its normal position.

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Last Updated: Jun 13, 2017

A break in the upper quarter of the thighbone, near the hip joint.

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Last Updated: Jun 13, 2017

Physical discomfort in the hip, which varies from mild to severe.

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Last Updated: May 25, 2018

Swelling of the tissues (tendons) connecting muscle to the bone in the hip joint.

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Last Updated: Jun 13, 2017

A condition of the large intestine (colon) that causes difficulty passing stool.

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Last Updated: Jun 13, 2017

Unwanted male-pattern hair growth on a woman's face, chest, and back.

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Last Updated: Jun 13, 2017

A chronic mental condition that affects thinking, perceiving, and relating to others.

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Last Updated: Jun 13, 2017

Welts on the skin triggered by a reaction to food, medicine, or other irritants.

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Last Updated: Jun 13, 2017

Cancer of the part of the immune system called the lymphatic system.

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Last Updated: Jun 13, 2017

Symptoms of a disrupted nerve pathway from the brain to the face and eye on one side.

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Last Updated: Jun 13, 2017

Feelings of opposition, unkindness, or unfriendliness toward something or someone.

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Last Updated: May 24, 2018

Sudden feeling of warmth, usually most intense over the face, neck, and chest, and profuse sweating, commonly due to menopause.

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Last Updated: May 25, 2018

An infection that causes warts in various parts of the body, depending on the strain.

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Last Updated: Jun 13, 2017

A fracture in the upper arm bone (humerus).

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Last Updated: Jun 13, 2017

An increased appetite or craving for food.

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Last Updated: May 25, 2018

An inherited condition in which nerve cells in the brain break down over time.

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Last Updated: Apr 25, 2018

A tapeworm infection that affects the liver, lungs, brain, and other organs.

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Last Updated: Jun 13, 2017

A fluid-filled sac around a testicle, often first noticed as swelling of the scrotum.

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Last Updated: Jun 13, 2017

A buildup of fluid in the cavities deep within the brain.

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Last Updated: Jun 13, 2017

Swelling in a kidney due to a backup of urine.

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Last Updated: Jun 13, 2017

A serious condition in which extra fluid builds up inside a fetus or newborn.

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Last Updated: Jun 13, 2017

Too much calcium in the blood.

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Last Updated: Jun 13, 2017

High amounts of the waxy substance found in fats in the blood (high cholesterol).

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Last Updated: Jun 13, 2017

Extra teeth in the mouth.

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Last Updated: Jun 13, 2017

A severe type of nausea during pregnancy.

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Last Updated: Jun 13, 2017

Increased blood flow to a part of the body.

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Last Updated: Jun 13, 2017

High blood sugar levels.

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Last Updated: May 24, 2018

Abnormally excessive sweating involving the extremities, underarms, and face, usually unrelated to body temperature or exercise.

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Last Updated: May 25, 2018

A high level of the electrolyte potassium in the blood.

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Last Updated: May 24, 2018

A condition in which there are high levels of fat-like substances (lipids) in the blood.

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Last Updated: Jun 13, 2017

Greater than average range of mobility in the joints.

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Last Updated: May 26, 2018

A high level of sodium in the blood.

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Last Updated: Jun 13, 2017

An excess of the hormone made by 4 small glands in the neck (parathyroid glands).

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Last Updated: Jun 13, 2017

Darkened patches or spots on the skin.

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Last Updated: May 25, 2018

An abnormal increase in normal cell production.

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Last Updated: Jun 13, 2017

An obsession with sexual thoughts, urges, or behaviors that may cause distress or that negatively affects health, job, or relationships.

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Last Updated: May 25, 2018

Excessive sleepiness or drowsiness.

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Last Updated: May 25, 2018

A condition in which the force of the blood against the artery walls is too high.

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Last Updated: Jun 13, 2017

A severe increase in blood pressure that can lead to a stroke.

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Last Updated: Jun 13, 2017

A dangerously overheated body, usually in response to prolonged, hot, humid weather.

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Last Updated: May 25, 2018

The overproduction of a hormone by the butterfly-shaped gland in the neck (thyroid).

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Last Updated: Jun 13, 2017

A high level of a certain type of fat (triglycerides) in the blood.

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Last Updated: Jun 13, 2017

A condition in which the heart muscle becomes abnormally thick.

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Last Updated: Jun 13, 2017

The enlargement of an organ.

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Last Updated: May 25, 2018

An excess of uric acid in the blood.

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Last Updated: May 26, 2018

Rapid or deep breathing.

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Last Updated: May 26, 2018

A condition in which the liquid portion of the blood (plasma) is too high.

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Last Updated: Jun 13, 2017

A condition in which the blood has too little calcium.

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Last Updated: Jun 13, 2017

Obsession with the idea of having a serious but undiagnosed medical condition.

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Last Updated: Jun 13, 2017

A decreased sense of touch or sensation, also called numbness.

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Last Updated: May 25, 2018

Low blood sugar, the body's main energy source.

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Last Updated: Jun 13, 2017

A failure of the gonads, testes in men and ovaries in women, to function properly.

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Last Updated: Jun 13, 2017

A low level of the electrolyte potassium in the blood.

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Last Updated: May 24, 2018

Slowed or reduced muscle movement.

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Last Updated: May 25, 2018

A condition that occurs when the level of sodium in the blood is too low.

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Last Updated: Jun 13, 2017

A condition in which the left side of the heart is underdeveloped at birth.

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Last Updated: Jun 13, 2017

A condition in which the opening that drains urine is on the underside of the penis.

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Last Updated: Jun 13, 2017

Low blood pressure, which can cause fainting or dizziness because the brain doesn't receive enough blood.

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Last Updated: May 26, 2018

When the body loses heat faster than it can produce heat, causing a dangerously low body temperature.

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Last Updated: Jun 13, 2017

A condition in which the thyroid gland doesn't produce enough of some hormones.

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Last Updated: Jun 13, 2017

Weak muscle tone.

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Last Updated: May 26, 2018

Too little vitamin D in the body.

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Last Updated: Jun 13, 2017

A condition in which the liquid portion of the blood (plasma) is too low.

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Last Updated: Jun 13, 2017

A low level of oxygen in the blood.

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Last Updated: May 24, 2018

An absence of enough oxygen in the blood to sustain bodily functions.

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Last Updated: May 24, 2018

I

The creation of additional problems or complications resulting from medical treatment.

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Last Updated: Jun 13, 2017

A group of skin disorders characterized by dry, scaly, or thickened skin.

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Last Updated: Jun 13, 2017

Low levels of the blood cells that prevent bleeding (platelets).

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Last Updated: Jun 13, 2017

Inability of the intestine (bowel) to contract normally and move waste out of the body.

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Last Updated: Jun 13, 2017

A painful knee condition in which connective tissue rubs against the thighbone.

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Last Updated: Jun 13, 2017

Yellow tint of the skin due to high levels of a substance called bilirubin, with causes ranging from gallstones to liver or pancreatic cancer.

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Last Updated: Jun 13, 2017

A highly contagious skin infection that causes red sores on the face.

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Last Updated: Jun 13, 2017

Shoulder pain caused by connective tissue (a tendon) rubbing on a shoulder blade.

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Last Updated: Jun 13, 2017

A problem with emotional or behavioral self-control.

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Last Updated: May 25, 2018

A group of conditions in which the body can't properly convert food into energy.

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Last Updated: Jun 13, 2017

Upper abdominal discomfort, described as burning sensation, bloating or gassiness, nausea, or feeling full too quickly after starting to eat.

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Last Updated: May 26, 2018

A yellow tint to the skin in newborns due to temporarily elevated bilirubin levels, a condition that must be carefully monitored.

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Last Updated: May 25, 2018

Tissue death from reduced blood supply.

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Last Updated: Jun 13, 2017

Often called mono or kissing disease, an infection with the Epstein-Barr virus.

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Last Updated: Jun 13, 2017

Not getting pregnant despite having frequent, unprotected sex for 1 year.

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Last Updated: Jun 13, 2017

An immune response that causes redness and swelling of an area on the body or possibly tissues within the body.

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Last Updated: May 26, 2018

Ongoing inflammation of all or part of the digestive tract.

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Last Updated: Jun 13, 2017

A rare, rapidly developing cancer that makes the breast red, swollen, and tender.

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Last Updated: Jun 13, 2017

A common, sometimes deadly viral infection that attacks the lungs, nose, and throat.

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Last Updated: Jun 13, 2017

A shaved or tweezed hair that grows back into the skin, causing inflammation.

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Last Updated: Jun 13, 2017

A condition in which soft tissue bulges through a weak point in the abdominal muscles.

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Last Updated: Jun 13, 2017

The bite of an insect, such as a bee or mosquito, which usually causes mild symptoms.

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Last Updated: Jun 13, 2017

Persistent problems falling or staying asleep or both.

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Last Updated: Jun 13, 2017

A resistance to the hormone insulin, resulting in increasing blood sugar.

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Last Updated: Jun 13, 2017

Below average intelligence and set of life skills present before age 18.

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Last Updated: Jun 13, 2017

Bleeding inside the body, particularly in the chest or belly cavities, or into muscles.

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Last Updated: Jun 13, 2017

Interstitial cystitis is a chronic, painful bladder condition.

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Last Updated: Jun 13, 2017

A group of disorders that cause progressive scarring of lung tissue.

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Last Updated: Jun 13, 2017

Skin inflammation, usually in warm, moist areas, such as the groin or between skin folds.

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Last Updated: May 25, 2018

A weakness in a blood vessel in the brain that balloons and fills with blood.

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Last Updated: Jun 13, 2017

A condition in which a baby does not grow to normal weight during pregnancy.

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Last Updated: Jun 13, 2017

A condition in which part of the intestine slides into an adjacent part of the intestine.

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Last Updated: Jun 13, 2017

A nipple that's turned inward.

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Last Updated: May 24, 2018

A lack of iodine in the diet.

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Last Updated: Jun 13, 2017

A condition of too little iron in the body.

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Last Updated: Jun 13, 2017

Too few healthy red blood cells due to too little iron in the body.

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Last Updated: Jun 13, 2017

Too much iron in the body.

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Last Updated: Jun 13, 2017

Missed, delayed, or erratic periods or abnormal bleeding patterns.

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Last Updated: May 24, 2018

Feelings of frustration or anger, often over seemingly small matters.

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Last Updated: May 25, 2018

An intestinal disorder causing pain in the belly, gas, diarrhea, and constipation.

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Last Updated: Jun 13, 2017

A patchwork of inflamed, bright red skin on a baby's bottom (diaper rash).

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Last Updated: Jun 13, 2017

Reduced blood flow.

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Last Updated: May 24, 2018

A persistent and often intense itch around the anus.

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Last Updated: May 25, 2018

J

An infection found in Asia and the west Pacific that can cause brain swelling.

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Last Updated: Jun 13, 2017

A yellow tint to the skin or eyes caused by an excess of bilirubin, a substance created when red blood cells break down.

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Last Updated: Jun 13, 2017

Yellow skin caused by the buildup of bilirubin in the blood.

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Last Updated: Jun 13, 2017

Physical discomfort in the jaw.

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Last Updated: May 25, 2018

A sleep disorder that can affect those who travel quickly across multiple time zones.

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Last Updated: Jun 13, 2017

An injury where bone joints are forced out of normal position.

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Last Updated: Jun 13, 2017

Physical discomfort where two or more bones meet to form a joint, ranging from mild to disabling.

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Last Updated: May 25, 2018

A form of arthritis that affects children.

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Last Updated: Dec 6, 2017

K

A cancer that causes lesions in the soft tissues.

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Last Updated: Jun 13, 2017

A condition that causes inflammation in the walls of some blood vessels in the body.

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Last Updated: Jun 13, 2017

A raised scar after an injury has healed.

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Last Updated: Jun 13, 2017

Inflammation of the clear tissue on the front of the eye (cornea).

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Last Updated: Jun 13, 2017

Dry eye that occurs when tears aren't able to provide adequate moisture.

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Last Updated: Jun 13, 2017

A condition in which the clear tissue on the front of the eye (cornea) bulges outward.

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Last Updated: Jun 13, 2017

A condition that causes rough patches and small, acnelike bumps on the skin.

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Last Updated: Jun 13, 2017

Life-threatening disturbance of metabolism most often seen in uncontrolled diabetes.

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Last Updated: Jun 13, 2017

Physical discomfort in the kidneys, organs located under the lower ribs in the back.

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Last Updated: May 25, 2018

A small, hard deposit that forms in the kidneys and is often painful when passed.

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Last Updated: Jun 13, 2017

An impulse control disorder that results in an irresistible urge to steal.

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Last Updated: Jun 13, 2017

A genetic condition in which a boy is born with an extra copy of the X chromosome.

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Last Updated: Jun 13, 2017

Pain in or around the knee that may indicate a condition affecting the knee joint itself or the soft tissue around the knee.

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Last Updated: May 26, 2018

Malnutrition produced by a severely inadequate amount of protein in the diet.

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Last Updated: Jun 13, 2017

A forward rounding of the back.

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Last Updated: Jun 13, 2017

L

Inflammation of the inner ear or the nerves that connect the inner ear to the brain.

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Last Updated: Jun 13, 2017

A condition in which lactic acid builds up in the blood faster than it can be removed.

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Last Updated: Jun 13, 2017

The inability to fully digest sugar (lactose) in dairy products.

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Last Updated: Jun 13, 2017

An inflammation of the voice box from overuse, irritation, or infection.

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Last Updated: Jun 13, 2017

Decreased vision due to abnormal visual development.

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Last Updated: Jun 13, 2017

A buildup of lead in the body, usually over months or years.

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Last Updated: Jun 13, 2017

A disorder that affects ability to acquire and use academic skills, such as reading and calculating.

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Last Updated: May 24, 2018

A delay or blockage of electrical impulses to the left side of the heart.

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Last Updated: Jun 13, 2017

Enlargement of muscle tissue in the heart's lower left chamber (ventricle).

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Last Updated: Jun 13, 2017

Physical discomfort in part or all of the leg that can vary in intensity.

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Last Updated: May 25, 2018

A noncancerous soft tissue tumor that develops from smooth muscle.

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Last Updated: Jun 13, 2017

An infection with leishmania parasites spread by sandflies.

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Last Updated: Jun 13, 2017

A chronic, curable infectious disease mainly causing skin lesions and nerve damage.

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Last Updated: Jun 13, 2017

A bacterial disease spread through the urine of infected animals.

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Last Updated: Jun 13, 2017

An abnormal area of tissue inside or outside the body that may get bigger or change appearance, and may or may not be cancerous.

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Last Updated: May 25, 2018

A state of weariness that involves diminished energy, mental capacity, and motivation.

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Last Updated: May 24, 2018

A cancer of blood-forming tissues, hindering the body's ability to fight infection.

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Last Updated: Jun 13, 2017

A high level of white blood cells in the blood.

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Last Updated: May 24, 2018

A low level of white blood cells in the blood, which can interfere with the ability to fight infection.

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Last Updated: May 24, 2018

Thickened, white patches inside the mouth.

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Last Updated: Jun 13, 2017

Whitish or yellowish vaginal discharge.

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Last Updated: May 25, 2018

A chronic condition that causes thin, white patches of skin, usually in the genital area.

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Last Updated: Jun 13, 2017

Feeling dizzy or about to pass out.

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Last Updated: May 24, 2018

Walking with an impaired gait, usually favoring one leg over the other.

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Last Updated: May 26, 2018

A fatty lump most often situated between the skin and underlying muscle layer.

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Last Updated: Jun 13, 2017

A potentially serious infection that can be contracted from meat and dairy products.

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Last Updated: Jun 13, 2017

Cancer that begins in the cells of the liver.

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Last Updated: Jun 13, 2017

Loss of liver function.

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Last Updated: Jun 13, 2017

A noncancerous mass in the liver.

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Last Updated: Jun 13, 2017

Physical discomfort in the liver, an organ located in the upper right belly.

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Last Updated: May 25, 2018

Flat tan, brown, or black spots on the skin common with age.

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Last Updated: Jun 13, 2017

Feeling sad and unhappy about being socially isolated.

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Last Updated: May 25, 2018

A heart rhythm disorder that can potentially cause fast, chaotic heartbeats.

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Last Updated: Jun 13, 2017

A curving inward of the lower back.

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Last Updated: Jun 13, 2017

The inability to respond to surroundings or stimuli.

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Last Updated: Jun 13, 2017

Partial or complete loss of the sense of smell.

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Last Updated: May 25, 2018

Physical discomfort with pain affecting the lower half of the back, varying in intensity from a dull ache to incapacitating.

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Last Updated: May 26, 2018

Bleeding from the small intestine, large intestine, rectum, or anus.

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Last Updated: Jun 13, 2017

Bleeding from the small intestine, large intestine, rectum, or anus.

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Last Updated: Jun 13, 2017

A disease of the root of a nerve in the lower (lumbar) spine.

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Last Updated: Jun 13, 2017

A narrowing of the open spaces in the lower (lumbar) spine.

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Last Updated: Jun 13, 2017

A cancer that begins in the lungs and most often occurs in people who smoke.

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Last Updated: Jun 13, 2017

A chronic inflammatory disease.

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Last Updated: Jun 13, 2017

A tick-borne illness caused by the bacterium Borrelia burgdorferi.

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Last Updated: Jun 13, 2017

A tropical, parasitic disease that affects the lymph nodes and lymph vessels.

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Last Updated: Jun 13, 2017

Swelling in an arm or leg caused by a lymphatic system blockage.

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Last Updated: Jun 13, 2017

A cancer of the lymphatic system.

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Last Updated: Jun 13, 2017

M

A viral respiratory illness caused by a coronavirus.

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Last Updated: Jun 13, 2017

An eye disease that causes vision loss.

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Last Updated: Jun 13, 2017

A brain disorder in adult cattle that may be spread to humans through diseased meat.

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Last Updated: Jun 13, 2017

A low level of the mineral magnesium in the body.

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Last Updated: Jun 13, 2017

A mood disorder causing a persistent feeling of sadness and loss of interest.

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Last Updated: Jun 13, 2017

A condition that prevents absorption of nutrients through the small intestine.

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Last Updated: Jun 13, 2017

A general sense of being unwell, often accompanied by fatigue, diffuse pain, or lack of interest in activities.

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Last Updated: May 25, 2018

A disease caused by a parasite, transmitted by the bite of infected mosquitoes.

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Last Updated: Jun 13, 2017

Severe reaction to anesthesia drugs causing a high temperature and muscle break down.

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Last Updated: Jun 13, 2017

To intentionally pretend to have a disease in order to achieve another goal.

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Last Updated: Jun 13, 2017

Lack of sufficient nutrients in the body.

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Last Updated: Jun 13, 2017

The abnormal alignment of the upper and lower teeth.

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Last Updated: Jun 13, 2017

Cancer that starts in a milk duct of the breast.

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Last Updated: Jun 13, 2017

Extremely elevated and excitable mood usually associated with bipolar disorder.

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Last Updated: May 25, 2018

Condition that makes it hard to break down certain parts of protein (amino acids).

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Last Updated: Jun 13, 2017

Severe malnutrition with muscle and fat wasting.

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Last Updated: Jun 13, 2017

An inherited disorder that affects connective tissue.

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Last Updated: Jun 13, 2017

A painful infection of the breast tissue.

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Last Updated: Jun 13, 2017

Too many of a type of disease-fighting and wound-healing cells (mast cells).

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Last Updated: Jun 13, 2017

An infection that affects the mastoid bone, located behind the ear.

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Last Updated: Jun 13, 2017

A viral infection that can be serious for small children.

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Last Updated: Jun 13, 2017

A severe form of depression.

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Last Updated: May 25, 2018

A noncancerous mole caused by a disorder of pigment-producing skin cells.

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Last Updated: Jun 13, 2017

The most serious type of skin cancer.

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Last Updated: Jun 13, 2017

A condition in which brown patches appear on the face.

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Last Updated: Jun 13, 2017

Dark tarry stool with or without visible blood.

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Last Updated: May 25, 2018

An inner ear disorder that causes a spinning sensation, ear ringing, and hearing loss.

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Last Updated: Jun 13, 2017

A tumor that arises from the membranes surrounding the brain and spinal cord.

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Last Updated: Jun 13, 2017

Inflammation of brain and spinal cord membranes, typically caused by an infection.

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Last Updated: Jun 13, 2017

A serious bacterial infection that affects the brain and spinal cord.

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Last Updated: Jun 13, 2017

Inflammation of the brain and surrounding tissues, usually caused by infection.

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Last Updated: Jun 13, 2017

The permanent end of fertility, signaled by 12 months since last menstruation.

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Last Updated: Jun 13, 2017

Heavy or prolonged vaginal bleeding with menstrual cycle.

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Last Updated: May 25, 2018

Painful or irregular periods.

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Last Updated: May 24, 2018

Inability to think or reason in a focused, clear manner.

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Last Updated: May 25, 2018

A nerve condition characterized by tingling, numbness, and pain in the outer thigh.

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Last Updated: Jun 13, 2017

A tumor of the tissue that lines the lungs, stomach, heart, and other organs.

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Last Updated: Jun 13, 2017

A condition in which too much acid accumulates in the body.

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Last Updated: Jun 13, 2017

Too much of a certain type of the chemical bicarbonate in the body.

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Last Updated: Jun 13, 2017

A cluster of conditions that increases the risk of heart disease, stroke, and diabetes.

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Last Updated: Jun 13, 2017

Inflammation of the ball of the foot (metatarsals).

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Last Updated: Jun 13, 2017

A sprain of the main joint in the big toe (turf toe).

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Last Updated: Jun 13, 2017

Bleeding from the uterus that occurs in between periods, may occur every few weeks, and the flow may be heavier than usual.

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Last Updated: May 25, 2018

An abnormally small penis.

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Last Updated: Jun 13, 2017

Discomfort in the area of the spine between the base of the neck to the bottom of the ribcage.

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Last Updated: May 26, 2018

An intense headache often accompanied by nausea and sensitivity to light and sound.

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Last Updated: Jun 13, 2017

A tiny, white bump that commonly appears on a baby's face.

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Last Updated: Jun 13, 2017

A skin condition caused by blocked sweat ducts and trapped sweat beneath the skin.

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Last Updated: Jun 13, 2017

Contraction of the pupil, which can be temporary or permanent, depending on the cause.

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Last Updated: Jun 13, 2017

Spontaneous loss of a pregnancy before the 20th week, most often before the 12th week.

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Last Updated: Jun 13, 2017

A strong reaction to specific sounds.

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Last Updated: Jun 13, 2017

A disorder that occurs when structures that produce energy for a cell malfunction.

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Last Updated: Jun 13, 2017

Improper closure of the valve between the heart's upper and lower left chambers.

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Last Updated: Jun 13, 2017

A backflow of blood caused by failure of the heart's mitral valve to close tightly.

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Last Updated: Jun 13, 2017

A noncancerous tumor that develops in the womb (uterus), also called molar pregnancy.

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Last Updated: Apr 25, 2018

A mole (pigmented skin lesion).

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Last Updated: Jun 13, 2017

A viral skin infection that results in round, firm, painless bumps.

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Last Updated: Jun 13, 2017

A large, blue-gray birthmark.

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Last Updated: Jun 13, 2017

An abrupt change in mood or emotional state.

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Last Updated: May 26, 2018

An unexplained skin disorder that produces crawling sensations and skin sores.

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Last Updated: Jun 13, 2017

Nausea with or without vomiting during pregnancy, usually early pregnancy, at any time of day.

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Last Updated: May 25, 2018

A thickening of the tissue around a nerve leading to the toes.

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Last Updated: Jun 13, 2017

Illness caused by motion during travel.

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Last Updated: Jun 13, 2017

One or more painful sores on inner lips, gums, tongue, roof of the mouth, or throat that may interfere with eating, such as a canker sore.

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Last Updated: May 26, 2018

A cancer of plasma cells.

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Last Updated: Jun 13, 2017

A disease in which the immune system eats away at nerves' protective covering.

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Last Updated: Jun 13, 2017

A viral infection that affects the salivary glands.

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Last Updated: Jun 13, 2017

A severe mental condition in which someone pretends to be sick for no obvious reason.

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Last Updated: Jun 13, 2017

A severe mental condition in which someone imposes symptoms on a healthy person.

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Last Updated: Jun 13, 2017

Involuntary contractions of a muscle, typically harmless and temporary, but can be painful.

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Last Updated: May 25, 2018

Soreness and achiness in the muscles that can range from mild to severe.

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Last Updated: May 24, 2018

Aching, tender muscles.

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Last Updated: May 25, 2018

Decreased strength in the muscles.

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Last Updated: May 26, 2018

A group of genetic diseases that cause progressive weakness and loss of muscle mass.

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Last Updated: Jun 13, 2017

A weakness and rapid fatigue of muscles under voluntary control.

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Last Updated: Jun 13, 2017

Any disease caused by a fungus.

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Last Updated: Jun 13, 2017

Dilated pupils, which may occur normally or in response to a trauma, illness, or drugs.

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Last Updated: Jun 13, 2017

A group of disorders caused when something disrupts the production of blood cells.

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Last Updated: Sep 11, 2019

A serious bone marrow condition that disrupts blood cell production.

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Last Updated: Jun 13, 2017

A nervous system disorder that affects the spinal cord.

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Last Updated: Jun 13, 2017

A blockage of blood flow to the heart, also known as a heart attack.

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Last Updated: Jun 13, 2017

Inflammation of the middle layer of the heart wall.

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Last Updated: Jun 13, 2017

A sudden, involuntary muscle jerk, shake, or spasm.

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Last Updated: May 24, 2018

A chronic muscular pain disorder.

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Last Updated: Jun 13, 2017

A disease of the muscles.

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Last Updated: Jun 13, 2017

A condition in which close objects appear clearly, far ones don't (nearsightedness).

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Last Updated: Jun 13, 2017

Inflammation of the muscles.

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Last Updated: Jun 13, 2017

A muscle disease featuring an inability to relax muscles at will.

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Last Updated: Jun 13, 2017

A dry, waxy swelling of the skin.

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Last Updated: Jun 13, 2017

N

An abnormal, rounded shape of the nail bed.

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Last Updated: May 26, 2018

Personality qualities include thinking very highly of oneself, needing admiration, believing others are inferior, and lacking empathy for others.

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Last Updated: May 25, 2018

A disorder in which a person has an inflated sense of self-importance.

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Last Updated: Jun 13, 2017

A chronic sleep disorder that causes overwhelming daytime drowsiness.

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Last Updated: Jun 13, 2017

Nasal passages swollen with excess fluid and mucus, may be triggered by infection, tobacco smoke, or perfume.

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Last Updated: May 25, 2018

A painless growth on the lining of the nose or sinuses.

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Last Updated: Jul 2, 2019

Sideways displacement of the wall between the nostrils.

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Last Updated: Aug 6, 2019

A cancer of the area behind the nose and above the back of the throat (nasopharynx).

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Last Updated: Jun 13, 2017

A queasy sensation including an urge to vomit.

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Last Updated: May 26, 2018

Pain in the neck and shoulder that varies in intensity, and may feel achy or like an electric shock from the neck to the arm.

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Last Updated: May 25, 2018

Death of cells or tissue through disease or injury.

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Last Updated: Jun 13, 2017

A serious bacterial infection that destroys tissue.

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Last Updated: Jun 13, 2017

A prick from a needle that has someone else's blood or body fluid on it.

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Last Updated: Jun 13, 2017

Red bumps that appear on a baby's cheeks, nose, and forehead.

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Last Updated: Jun 13, 2017

A liver condition that causes yellowing of a newborn baby's skin and eyes.

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Last Updated: Jun 13, 2017

A breathing disorder in newborns caused by immature lungs.

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Last Updated: Jun 13, 2017

A life-threatening, vaccine-preventable bacterial infection in newborns.

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Last Updated: Jun 13, 2017

Inflammation of the kidneys.

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Last Updated: Jun 13, 2017

A condition in which a kidney defect disrupts how the body handles fluids.

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Last Updated: Jun 13, 2017

A kidney disorder that causes the body to excrete too much protein in the urine.

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Last Updated: Jun 13, 2017

A condition in which a nerve is damaged due to overuse or compression.

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Last Updated: Jun 13, 2017

Damage to a nerve.

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Last Updated: May 25, 2018

Pain that travels along the length of a nerve.

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Last Updated: May 24, 2018

Pain caused by damaged or irritated nerves.

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Last Updated: Jun 13, 2017

A cancer that is commonly found in the adrenal glands.

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Last Updated: Jun 13, 2017

A deterioration of the nerves.

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Last Updated: Jun 13, 2017

A condition in which the neuroendocrine cells develop into tumors.

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Last Updated: Aug 1, 2019

A condition that causes tumors to form in the brain, spinal cord, and nerves.

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Last Updated: Jun 13, 2017

Condition in which the bladder doesn't function properly due to brain or nerve damage.

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Last Updated: Jun 13, 2017

A life-threatening nervous system reaction to certain drugs.

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Last Updated: Jun 13, 2017

A group of diseases that affect nerve and muscle function.

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Last Updated: Jun 13, 2017

A disorder that causes swelling of the eye nerves and the spinal cord.

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Last Updated: Apr 25, 2018

Joint deterioration from nerve damage caused by diabetes (Charcot joint).

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Last Updated: Jun 13, 2017

An abnormally low count of a type of white blood cell (neutrophils).

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Last Updated: Jun 13, 2017

Symptoms that occur after a person quits smoking cigarettes or using tobacco.

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Last Updated: Jun 13, 2017

Significant perspiration during sleep, usually has an underlying cause such as menopause, an illness, or medication side effect.

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Last Updated: May 25, 2018

Episodes of screaming, intense fear, and flailing while still asleep, often paired with sleepwalking.

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Last Updated: May 25, 2018

Frightening dreams, usually during REM sleep, that are normal and common in children under 10 and can also affect teens and adults.

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Last Updated: May 25, 2018

A dry, sore, irritated, or cracked nipple.

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Last Updated: Jun 13, 2017

Urinating frequently at night.

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Last Updated: May 25, 2018

Nighttime loss of bladder control, or bed-wetting, usually in children.

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Last Updated: May 25, 2018

Fluid-filled or solid lump that often doesn't indicate anything serious is wrong.

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Last Updated: May 26, 2018

Cancer the starts in the lymphatic system.

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Last Updated: Jun 13, 2017

One of two major types of lung cancer that can affect smokers and nonsmokers.

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Last Updated: Sep 11, 2019

The accumulation of liver fat in people who drink little or no alcohol.

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Last Updated: Jun 13, 2017

A genetic condition preventing normal development in parts of the body.

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Last Updated: Jun 13, 2017

Bleeding from the nose, either spontaneous or induced by trauma.

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Last Updated: May 25, 2018

Coin-shaped rash or sores.

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Last Updated: Jun 13, 2017

Any condition caused by poor diet or inability of the body to use certain nutrients.

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Last Updated: Jun 13, 2017

An involuntary eye movement which may cause the eye to rapidly move from side to side, up and down, or in a circle, and may slightly blur vision.

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Last Updated: May 24, 2018

O

A disorder involving excessive body fat that increases the risk of health problems.

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Last Updated: Jun 13, 2017

Excessive thoughts (obsessions) that lead to repetitive behaviors (compulsions).

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Last Updated: Jun 13, 2017

A condition in which breathing stops and starts during sleep.

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Last Updated: Jun 13, 2017

A severe headache that begins at the back of the neck and spreads upward.

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Last Updated: Jun 13, 2017

Pain while swallowing.

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Last Updated: May 25, 2018

Inflammation of a small sac of fluid (olecranon bursa) on the tip of the elbow.

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Last Updated: Jun 13, 2017

Less than normal urine output.

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Last Updated: Jun 13, 2017

A parasitic, tropical disease that affects the skin and eyes.

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Last Updated: Jun 13, 2017

A condition in which the corner or side of a toenail grows into the flesh.

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Last Updated: Jun 13, 2017

A nail fungus causing thickened, brittle, crumbly, or ragged nails.

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Last Updated: Jun 13, 2017

An often harmless infection that becomes serious due to a weakened immune system.

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Last Updated: Jun 13, 2017

A disorder in a child marked by defiant and disobedient behavior to authority figures.

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Last Updated: Apr 25, 2018

Inflammation of the optic nerve.

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Last Updated: Jun 13, 2017

Cancer that develops in any part of the mouth.

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Last Updated: Jun 13, 2017

An infection in which the fungus Candida albicans accumulates in the mouth.

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Last Updated: Jun 13, 2017

A noncancerous mucus-containing salivary gland cyst.

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Last Updated: Jun 13, 2017

Inflammation of 1 or both testicles.

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Last Updated: Jun 13, 2017

Discomfort when breathing while lying down flat; common in people with some types of heart or lung conditions.

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Last Updated: May 26, 2018

A form of low blood pressure that happens when standing up from sitting or lying down.

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Last Updated: May 24, 2018

A childhood repetitive use injury that causes a painful lump below the kneecap.

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Last Updated: Jun 13, 2017

Bone formation, generally referring to soft tissues becoming calcified and hardened.

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Last Updated: May 25, 2018

Type of arthritis that occurs when flexible tissue at the ends of bones wears down.

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Last Updated: Jun 13, 2017

A group of inherited disorders characterized by fragile bones that break easily.

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Last Updated: Jun 13, 2017

Inflammation of bone caused by infection, generally in the legs, arm, or spine.

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Last Updated: Jun 13, 2017

A condition in which bones become weak and brittle.

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Last Updated: Jun 13, 2017

A type of bone cancer that begins in the cells that form bones.

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Last Updated: Jun 13, 2017

An inflammation of the inner, middle, or outer ear, often with infection.

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Last Updated: Jun 13, 2017

An infection of the outer ear canal, also called swimmer's ear.

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Last Updated: Jun 13, 2017

An infection of the air-filled space behind the eardrum (the middle ear).

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Last Updated: Jul 2, 2019

A cancer that begins in the female organs that produce eggs (ovaries).

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Last Updated: Jun 13, 2017

A solid or fluid-filled sac or pocket (cyst) within or on the surface of an ovary.

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Last Updated: Jun 13, 2017

A condition in which the ovaries swell and get painful from excess hormone.

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Last Updated: Jun 13, 2017

A problem with bladder function that causes the sudden need to urinate.

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Last Updated: Apr 25, 2018

Weight above what's considered healthy, often measured using body mass index (BMI).

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Last Updated: May 25, 2018

Usually one-sided, lower belly pain associated with normal ovulation.

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Last Updated: Jun 13, 2017

An imbalance between levels of antioxidants and free radicals in the body.

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Last Updated: Jun 13, 2017

P

A disease that disrupts the replacement of old bone tissue with new bone tissue.

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Last Updated: Jun 13, 2017

A form of breast cancer affecting the nipple and dark circle of skin around it.

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Last Updated: Jun 13, 2017

Physical discomfort ranging from mild to severe, usually caused by injury, illness, or a nerve condition.

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Last Updated: May 25, 2018

Interstitial cystitis is a chronic, painful bladder condition.

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Last Updated: Jun 13, 2017

Paleness or loss of color from the skin or mucous membranes.

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Last Updated: Jun 13, 2017

A sensation that the heart is racing, pounding, fluttering, or skipping a beat, often bothersome, but hardly ever a sign of heart disease.

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Last Updated: May 26, 2018

Cancer that begins in the organ lying behind the lower part of the stomach (pancreas).

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Last Updated: Jun 13, 2017

An inflammation of the organ lying behind the lower part of the stomach (pancreas).

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Last Updated: Jun 13, 2017

Condition in which blood has fewer red cells, white cells, and platelets than normal.

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Last Updated: Jun 13, 2017

A sudden episode of intense fear that triggers severe physical reactions when there is no real danger or apparent cause.

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Last Updated: May 24, 2018

Sudden episode of intense fear or anxiety and physical symptoms, based on a perceived threat rather than imminent danger.

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Last Updated: May 26, 2018

Repeated episodes of sudden and intense fear when no real danger exists.

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Last Updated: Jun 13, 2017

The most common form of cancer of the butterfly-shaped gland in the neck (thyroid).

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Last Updated: Sep 11, 2019

Small raised, tender bump on the skin.

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Last Updated: May 25, 2018

Complete or partial loss of muscle function.

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Last Updated: Jun 13, 2017

A group of symptoms that develops in some people who have cancer.

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Last Updated: Jun 13, 2017

An unrealistic distrust of others or a feeling of being persecuted. Extreme degrees may be a sign of mental illness.

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Last Updated: May 26, 2018

Sexual behaviors generally considered harmful or unacceptable or that are illegal.

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Last Updated: Jun 13, 2017

Paralysis that affects all or part of the trunk, legs, and pelvic organs.

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Last Updated: Jun 13, 2017

Partial loss of muscle function.

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Last Updated: Jun 13, 2017

Tingling or prickling, “pins-and-needles” sensation; usually temporary, often occurs in the arms, hands, legs, or feet.

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Last Updated: May 25, 2018

A disorder of the nervous system that affects movement, often including tremor.

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Last Updated: Jun 13, 2017

An infection of the tissue folds around the nails.

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Last Updated: Jun 13, 2017

Inflammation of 1 or both of the largest saliva-producing glands inside the cheeks.

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Last Updated: Jun 13, 2017

Pattern of indirectly expressing negative feelings instead of openly addressing them.

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Last Updated: Jun 13, 2017

A condition in which a person has an extra chromosome 13.

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Last Updated: Jun 13, 2017

An injury to the tissue connecting the kneecap to the shinbone (patellar tendon).

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Last Updated: Jun 13, 2017

A condition in which the cartilage under the kneecap is damaged due to injury or overuse.

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Last Updated: Jun 13, 2017

A heart defect caused by problems in the heart's development.

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Last Updated: Jun 13, 2017

Inappropriate involuntary laughing and crying due to a nervous system disorder.

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Last Updated: Jun 13, 2017

The compulsive urge to lie about matters big and small, regardless of the situation.

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Last Updated: May 26, 2018

A condition in which the breastbone protrudes outward abnormally.

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Last Updated: Apr 25, 2018

A condition in which the breastbone sinks into the chest.

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Last Updated: Jun 13, 2017

An infection of the female reproductive organs.

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Last Updated: Jun 13, 2017

Pain or discomfort, ranging from a sharp jab to a dull ache, in the lowest part of the abdomen and pelvis.

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Last Updated: May 24, 2018

A disease in which cancer cells form in the tissues of the penis.

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Last Updated: Jun 13, 2017

A rupture of 1 of the 2 cylinders responsible for erections of the penis.

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Last Updated: Jun 13, 2017

A sore that develops on the lining of the esophagus, stomach, or small intestine.

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Last Updated: Jun 13, 2017

A hole in the tissue that separates the ear canal from the middle ear.

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Last Updated: Jun 13, 2017

A collection of pus in the tissue around the anus and rectum.

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Last Updated: Jun 13, 2017

A buildup of too much fluid around the heart.

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Last Updated: Jun 13, 2017

A swelling and irritation of the thin saclike membrane surrounding the heart (pericardium).

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Last Updated: Apr 25, 2018

Disease of the gums and tissue that support the teeth.

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Last Updated: Jun 13, 2017

A serious gum infection that damages gums and can destroy the jawbone.

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Last Updated: Apr 25, 2018

Inflammation of the skin around the mouth.

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Last Updated: Jun 13, 2017

Dark circles under the eyes.

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Last Updated: May 25, 2018

Swelling or puffiness around the eye area.

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Last Updated: May 25, 2018

Weakness, numbness, and pain from nerve damage, usually in the hands and feet.

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Last Updated: Jun 13, 2017

A circulatory condition in which narrowed blood vessels reduce blood flow to the limbs.

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Last Updated: Jun 13, 2017

Inflammation of the membrane lining the abdominal wall and covering the abdominal organs.

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Last Updated: Jun 13, 2017

A decrease in red blood cells when the body can't absorb enough vitamin B-12.

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Last Updated: Jun 13, 2017

A chronic state of brain dysfunction in which a person shows no signs of awareness.

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Last Updated: Jun 13, 2017

Sweating from sweat glands, often in response to heat, exercise, or stress.

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Last Updated: May 26, 2018

A highly contagious respiratory tract infection.

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Last Updated: Jun 13, 2017

A group of disorders characterized by delayed social and communication development.

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Last Updated: Jun 13, 2017

A condition in which the arch of the foot is higher than normal.

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Last Updated: Jun 13, 2017

Tiny round brown-purple spots due to bleeding under the skin, may be in a small area due to minor trauma or widespread due to blood-clotting disorder.

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Last Updated: May 25, 2018

Brief, sudden lapses of consciousness.

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Last Updated: Jun 13, 2017

Fibrous scar tissue inside the penis that causes curved, painful erections.

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Last Updated: Jun 13, 2017

Inflammation of the throat, often accompanied by pain or soreness, usually caused by an infection.

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Last Updated: May 25, 2018

A birth defect that causes an amino acid called phenylalanine to build up in the body.

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Last Updated: Jun 13, 2017

A usually noncancerous adrenal gland tumor.

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Last Updated: Apr 25, 2018

A condition in which tight foreskin can't be pulled back over the head of the penis.

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Last Updated: Jun 13, 2017

Inflammation of a vein.

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Last Updated: Jun 13, 2017

Mucus, thicker than normal due to illness or irritation, coughed up from the respiratory tract.

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Last Updated: May 26, 2018

Skin inflammation caused by exposure to the sun or ultraviolet radiation.

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Last Updated: Jun 13, 2017

Use of force to cause physical harm or pain to someone.

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Last Updated: Jun 13, 2017

Craving and chewing substances that have no nutritional value, such as ice, clay, soil, or paper.

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Last Updated: May 24, 2018

An abnormal skin growth located at the tailbone that contains hair and skin.

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Last Updated: Jun 13, 2017

Red, tender bumps with white pus at their tips.

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Last Updated: Jun 13, 2017

A skin pore clogged with oil, dead skin cells, and bacteria, usually on the face, neck, chest, back, or shoulders.

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Last Updated: May 25, 2018

A disorder in which the piriformis muscle irritates the sciatic nerve.

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Last Updated: Jun 13, 2017

Noncancerous tumors in the pituitary gland that don't spread beyond the skull.

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Last Updated: Jun 13, 2017

A skin rash that usually begins as a large spot on the chest, belly, or back.

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Last Updated: Jun 13, 2017

When the placenta covers the opening in the mother's cervix.

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Last Updated: Jun 13, 2017

Serious pregnancy complication in which the placenta detaches from the womb (uterus).

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Last Updated: Jun 13, 2017

A flat spot on a baby's head.

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Last Updated: Jun 13, 2017

An inflammation of a thick band of tissue that connects the heel bone to the toes.

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Last Updated: Jun 13, 2017

Hard, grainy growths that appear on the heels or balls of the feet.

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Last Updated: Jun 13, 2017

May refer to a substance that collects in and hardens blood vessels, builds up on tooth enamel, or appears on skin due to certain conditions.

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Last Updated: May 24, 2018

A buildup of fluid between the tissues that line the lungs and the chest.

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Last Updated: Jun 13, 2017

Inflammation of the tissues that line the lungs and the chest.

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Last Updated: Jun 13, 2017

A serious lung infection caused by the fungus Pneumocystis jiroveci.

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Last Updated: Jun 13, 2017

Infection that inflames air sacs in 1 or both lungs, which may fill with fluid.

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Last Updated: Jun 13, 2017

A general term that refers to inflamed lung tissue, but usually not to pneumonia.

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Last Updated: Jun 13, 2017

A collapsed lung.

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Last Updated: Jun 13, 2017

A virus that may cause paralysis.

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Last Updated: Jun 13, 2017

An inherited disorder in which clusters of cysts develop in the kidneys.

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Last Updated: Jun 13, 2017

A hormonal disorder causing enlarged ovaries with small cysts on the outer edges.

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Last Updated: Jun 13, 2017

An increase in red blood cell volume.

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Last Updated: Jun 13, 2017

A slow-growing blood cancer in which bone marrow makes too many red blood cells.

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Last Updated: Jun 13, 2017

A condition of having more than 5 digits on a hand or 5 toes on a foot.

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Last Updated: Jun 13, 2017

Intense thirst despite drinking plenty of fluids.

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Last Updated: May 26, 2018

A condition in which excess fluid develops in a pregnant woman's womb.

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Last Updated: Jun 13, 2017

An inflammatory disorder causing muscle pain and stiffness around the shoulders and hips.

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Last Updated: Jun 13, 2017

Abnormal tissue growth on a mucous membrane.

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Last Updated: Jun 13, 2017

Excessive eating.

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Last Updated: May 25, 2018

Passing abnormally large amounts of urine.

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Last Updated: May 24, 2018

Disorders resulting from buildup of certain chemicals related to red blood cell proteins.

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Last Updated: Jun 13, 2017

High blood pressure in the vein that carries blood from the intestine to the liver.

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Last Updated: Jun 13, 2017

A complex disorder in which several post-concussion symptoms last for weeks or months.

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Last Updated: Jun 13, 2017

Pain from shingles that lasts long after a shingles rash and blisters disappear.

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Last Updated: Jun 13, 2017

Excess mucus that accumulates and drips down the back of the nose and throat.

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Last Updated: May 25, 2018

Depression that occurs after childbirth.

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Last Updated: Jun 13, 2017

Excessive bleeding after childbirth.

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Last Updated: Sep 11, 2019

A mental health condition triggered by experiencing or seeing a terrifying event.

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Last Updated: Jun 13, 2017

Symptoms related to reduced blood volume that occur when standing up.

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Last Updated: Jun 13, 2017

A genetic disorder that affects the body, mind, and behavior.

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Last Updated: Apr 25, 2018

A pregnancy complication characterized by high blood pressure.

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Last Updated: Apr 25, 2018

A condition in which a child's body begins changing into that of an adult too soon.

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Last Updated: Jun 13, 2017

A condition in which blood sugar is high, but not high enough to be type 2 diabetes.

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Last Updated: Jun 13, 2017

Orgasm and emission of semen occurring just before or shortly after beginning sexual intercourse.

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Last Updated: May 24, 2018

Menopause occurring before age 40 caused by chemotherapy or surgical removal of the ovaries.

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Last Updated: Apr 26, 2018

A loss of normal function of the ovaries before age 40.

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Last Updated: Nov 3, 2017

Extra, abnormal heartbeats that begin in one of the heart's two lower chambers.

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Last Updated: Jun 13, 2017

A severe, sometimes disabling extension of PMS.

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Last Updated: Jun 13, 2017

A group of symptoms that occur in women, typically between ovulation and a period.

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Last Updated: Jun 13, 2017

Injury to skin and underlying tissue resulting from prolonged pressure on the skin.

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Last Updated: Apr 25, 2018

A birth that occurs before the 37th week of pregnancy.

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Last Updated: Jun 13, 2017

A prolonged erection of the penis, usually without sexual arousal.

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Last Updated: Jun 13, 2017

Inflammation of the lining of the tube connected to the end of the colon (rectum).

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Last Updated: Jun 13, 2017

A progressive genetic disorder that causes children to age rapidly.

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Last Updated: Jun 13, 2017

A brain condition causing serious walking, balance, and eye movement problems.

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Last Updated: Jun 13, 2017

A condition in which the hormone-producing gland in the brain overproduces prolactin.

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Last Updated: Jun 13, 2017

A bulging or falling out of a body part, such as the rectum or vagina.

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Last Updated: May 24, 2018

A cancer in a man's prostate, a small walnut-shaped gland that produces seminal fluid.

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Last Updated: Jun 13, 2017

Swelling of the small walnut-shaped gland (prostate) that produces seminal fluid.

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Last Updated: Jul 2, 2019

An excess of protein in the urine.

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Last Updated: May 24, 2018

An itchy rash that commonly occurs during the last 3 months of pregnancy.

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Last Updated: Jun 13, 2017

An uncomfortable, irritating sensation that creates an urge to scratch that can involve any part of the body.

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Last Updated: May 25, 2018

A condition that occurs when pressure inside the skull increases for no obvious reason.

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Last Updated: Jun 13, 2017

A condition in which skin cells build up and form scales and itchy, dry patches.

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Last Updated: Jun 13, 2017

A form of arthritis that affects some people who have the skin condition psoriasis.

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Last Updated: Jun 13, 2017

A mental disorder causing dysfunction in thinking, perceiving, and relating to others.

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Last Updated: Jun 13, 2017

A mental disorder characterized by a disconnection from reality.

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Last Updated: Jun 13, 2017

A growth that starts on the clear tissue of the eye that can spread to the cornea.

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Last Updated: Jun 13, 2017

Abnormal low-lying or drooping upper eyelid.

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Last Updated: May 25, 2018

A condition in which tiny insects infest the genital area.

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Last Updated: Jun 13, 2017

A condition in which food, liquids, saliva, or vomit is breathed into the airways.

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Last Updated: Jun 13, 2017

A condition caused by excess fluid in the lungs.

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Last Updated: Jun 13, 2017

A condition in which 1 or more pulmonary arteries in the lungs become blocked.

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Last Updated: Jun 13, 2017

A type of high blood pressure that affects arteries in the lungs and in the heart.

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Last Updated: Jun 13, 2017

A condition in which small blood vessels leak blood into the skin, joints, intestines, or organs, that may be caused by certain disorders or aging.

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Last Updated: May 24, 2018

A life-threatening childhood infection caused by a type of bacteria.

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Last Updated: Jun 13, 2017

Thick fluid caused by infection that includes white blood cells and cellular debris, may be white, yellow, or pink or green tinged.

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Last Updated: May 25, 2018

Inflammation of the kidney due to a bacterial infection.

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Last Updated: Jun 13, 2017

A condition in which the opening between the stomach and small intestine thickens.

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Last Updated: Jun 13, 2017

Q

An infection caused by the bacterium Coxiella burnetii.

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Last Updated: Jun 13, 2017

Paralysis including the trunk, pelvic area, and both arms and legs.

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Last Updated: Jun 13, 2017

A complication of tonsillitis in which the infection spreads behind the tonsils.

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Last Updated: Jun 13, 2017

R

A deadly virus spread to people from the saliva of infected animals.

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Last Updated: Jun 13, 2017

A disease of the root of a nerve, such as from a pinched nerve or a tumor.

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Last Updated: Jun 13, 2017

A condition in which some areas of the body feel numb and cool in certain conditions.

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Last Updated: Jun 13, 2017

A condition in which shaved beard hair curves into the skin, causing inflammation.

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Last Updated: Jun 13, 2017

The passage of mucus or other liquid from the anus.

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Last Updated: Jun 13, 2017

A condition that occurs when part of the large intestine slips outside the anus.

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Last Updated: Jun 13, 2017

A condition in which the tissue wall between the rectum and vagina weakens.

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Last Updated: Jun 13, 2017

Eye redness from irritated or inflamed blood vessels on the surface of the white part of the eye, commonly called bloodshot eyes.

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Last Updated: May 26, 2018

When undigested or partially digested food comes back up through the esophagus and is reswallowed or spit out.

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Last Updated: May 25, 2018

Joint pain and swelling triggered by an infection in another part of the body.

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Last Updated: Jun 13, 2017

A type of kidney cancer that starts in the lining of small tubes in the kidney.

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Last Updated: Jun 13, 2017

Waves of sharp, intense pain caused by kidney dysfunction.

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Last Updated: May 26, 2018

A condition in which the kidneys lose the ability to remove waste and balance fluids.

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Last Updated: Jun 13, 2017

A term used to describe damage and pain caused by repetitive movement and overuse.

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Last Updated: Jun 13, 2017

A condition in which the lungs can't remove all of the body's carbon dioxide.

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Last Updated: Jun 13, 2017

A condition in which the legs feel extremely uncomfortable, typically in the evenings.

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Last Updated: Jun 13, 2017

Difficulty fully expanding the lungs with air.

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Last Updated: Jun 13, 2017

An emergency when part of the eye (the retina) pulls away from supportive tissue.

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Last Updated: Jun 13, 2017

An eye disease in which the back wall of the eye (retina) is damaged.

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Last Updated: Jun 13, 2017

An eye cancer that begins in the back of the eye (retina), most commonly in children.

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Last Updated: Jun 13, 2017

A rare genetic mutation affecting brain development in girls.

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Last Updated: Jun 13, 2017

A serious condition that causes swelling in the liver and brain.

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Last Updated: Jun 13, 2017

A breakdown of muscle tissue that releases a damaging protein into the blood.

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Last Updated: Jun 13, 2017

A cancer that begins in the muscles.

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Last Updated: Jun 13, 2017

A disease that can result from inadequately treated strep throat or scarlet fever.

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Last Updated: Jun 13, 2017

A chronic inflammatory disorder affecting small joints in the hands and feet.

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Last Updated: Jun 13, 2017

Irritation and swelling of the mucous membrane in the nose.

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Last Updated: Jun 13, 2017

An injury that occurs when one of the bones in the rib cage cracks.

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Last Updated: Jun 13, 2017

A softening and weakening of bones in children, usually due to inadequate vitamin D.

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Last Updated: May 26, 2018

A delay or blockage of electrical impulses to the right side of the heart.

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Last Updated: Jun 13, 2017

A highly contagious, fungal infection of the skin or scalp caused by parasites.

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Last Updated: Jun 13, 2017

A tick-borne disease that makes blood vessels leak.

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Last Updated: Jun 13, 2017

A condition that causes redness and, often, small, red, pus-filled bumps on the face.

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Last Updated: Jun 13, 2017

A common viral infection in young children that may cause high fever and a rash.

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Last Updated: Jun 13, 2017

A tear in the tissues connecting muscle to bone (tendons) around the shoulder joint.

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Last Updated: Jun 13, 2017

Swelling of the tissues (tendons) connecting the muscles and bones in the shoulder.

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Last Updated: Jun 13, 2017

A group of viruses that commonly cause stomach upset and diarrhea, especially in children.

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Last Updated: Jun 13, 2017

A contagious viral infection best known by its distinctive red rash.

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Last Updated: Jun 13, 2017

Repeatedly spitting up undigested or partially digested food, then rechewing it or spitting it out.

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Last Updated: May 25, 2018

Excess drainage, ranging from a clear fluid to thick mucus, from the nose and nasal passages.

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Last Updated: May 24, 2018

S

An injury to the ring of fibrous tissue around the shoulder joint.

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Last Updated: Jun 13, 2017

Symptoms that may occur when stopping SSRI antidepressants.

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Last Updated: Jun 13, 2017

Inflammation of 1 or both of the joints that connect the lower spine and pelvis.

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Last Updated: Jun 13, 2017

Feeling down or unhappy in response to grief, discouragement, or disappointment; if ongoing, may indicate depression.

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Last Updated: May 25, 2018

An infection with salmonella bacteria, commonly caused by contaminated food or water.

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Last Updated: Apr 25, 2018

The growth of tiny collections of inflammatory cells in different parts of the body.

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Last Updated: Jun 13, 2017

A tumor that occurs in the bones and soft tissues.

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Last Updated: May 26, 2018

A contagious, intensely itchy skin condition caused by a tiny, burrowing mite.

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Last Updated: Jun 13, 2017

Menstrual periods that occur less often than the average 28-day cycle.

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Last Updated: May 25, 2018

A common wrist fracture.

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Last Updated: Jun 13, 2017

A growth of tissue marking the spot where skin has healed after an injury.

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Last Updated: May 25, 2018

A bacterial illness that develops in some people who have strep throat.

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Last Updated: Jun 13, 2017

A disease caused by parasitic worms found in certain freshwater snails.

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Last Updated: Jun 13, 2017

A mental health condition including schizophrenia and mood disorder symptoms.

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Last Updated: Jun 13, 2017

A condition in which people avoid social activities and interacting with others.

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Last Updated: Jun 13, 2017

A brain disorder in which people interpret reality abnormally, such as hallucinations.

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Last Updated: Jun 13, 2017

An often noncancerous tumor of the cells in the tissue that covers the nerves.

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Last Updated: Jun 13, 2017

Pain radiating along the sciatic nerve, which runs down each leg from the lower back.

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Last Updated: Jun 13, 2017

Chronic hardening and tightening of the skin and connective tissues.

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Last Updated: Jun 13, 2017

A hardening of a tissue in the body from inflammation, scarring, or disease.

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Last Updated: Jun 13, 2017

A sideways curvature of the spine.

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Last Updated: Jun 13, 2017

An injury caused by the venom of a scorpion.

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Last Updated: Sep 6, 2019

A condition caused by a severe lack of vitamin C in the diet.

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Last Updated: Jun 13, 2017

Nausea and uneasiness caused by a ship's movements.

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Last Updated: Jun 13, 2017

A mood disorder characterized by depression that occurs at the same time every year.

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Last Updated: Jun 13, 2017

A small, slow-growing, noncancerous bump beneath the skin.

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Last Updated: Jun 13, 2017

A skin condition that causes scaly patches and red skin, mainly on the scalp.

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Last Updated: Jun 13, 2017

A noncancerous skin condition that appears as a waxy brown, black, or tan growth.

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Last Updated: Jun 13, 2017

A pregnancy in the second three months.

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Last Updated: May 25, 2018

Uncontrolled jerking, loss of consciousness, blank stares, or other symptoms caused by abnormal electrical activity in the brain.

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Last Updated: May 24, 2018

A condition in which a child who can speak doesn't speak in certain situations.

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Last Updated: Jun 13, 2017

The act of deliberately harming the surface of one's own body, such as cutting or burning.

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Last Updated: May 25, 2018

Hearing loss caused by damage to the inner ear or the nerve from the ear to the brain.

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Last Updated: Jun 13, 2017

A disorder in which a child becomes excessively anxious when separated from parents.

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Last Updated: Jun 13, 2017

A life-threatening complication of an infection that's triggered by inflammation.

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Last Updated: Jun 13, 2017

A widespread infection causing organ failure and dangerously low blood pressure.

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Last Updated: Jun 13, 2017

A bacterial infection of the blood.

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Last Updated: Jun 13, 2017

A tumorlike accumulation of fluid under the skin.

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Last Updated: Jun 13, 2017

Potentially life-threatening symptoms that can occur when antidepressants are taken with other medications that also raise serotonin levels.

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Last Updated: May 25, 2018

A contagious and sometimes fatal respiratory illness caused by a coronavirus.

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Last Updated: Jun 13, 2017

A serious, inherited inability to fight even mild infections (bubble boy disease).

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Last Updated: Jun 13, 2017

Any sexual activity not agreed to.

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Last Updated: Jun 13, 2017

Persistent, recurrent difficulty with sexual response, desire, orgasm, or pain.

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Last Updated: May 25, 2018

A serious brain injury resulting from forcefully shaking an infant or toddler.

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Last Updated: Jun 13, 2017

Pain along the shinbone, the large, front bone in the lower leg, caused by overuse.

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Last Updated: Jun 13, 2017

Involuntary trembling of the body caused by muscle contractions.

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Last Updated: May 24, 2018

Occurs when organs don't get enough blood.

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Last Updated: Jun 13, 2017

Physical discomfort of the shoulder, including the joint itself or the muscles, tendons, and ligaments that support the joint.

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Last Updated: May 25, 2018

Heart rhythm conditions in which the heart's natural pacemaker malfunctions.

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Last Updated: Jun 13, 2017

A group of disorders that cause red blood cells to become misshapen and break down.

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Last Updated: Jun 13, 2017

A condition in which a child inherits the sickle cell gene mutation from 1 parent.

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Last Updated: Jun 13, 2017

A condition in which the cavities around the nasal passages become inflamed.

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Last Updated: Jun 13, 2017

An immune system disorder characterized by dry eyes and dry mouth.

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Last Updated: Jun 13, 2017

The abnormal growth of skin cells.

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Last Updated: Jun 13, 2017

An infection of the skin caused by bacteria or by a fungus, virus, or parasite.

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Last Updated: Jun 13, 2017

Abnormal appearance or growth on the skin.

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Last Updated: May 25, 2018

Temporary outbreak of red, bumpy, scaly, or itchy patches of skin, possibly with blisters or welts.

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Last Updated: May 25, 2018

A common skin growth in which a short, narrow stalk sticks out of the skin.

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Last Updated: Jun 13, 2017

A potentially serious sleep disorder in which breathing repeatedly stops and starts.

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Last Updated: Jun 13, 2017

A potentially serious sleep disorder in which breathing repeatedly stops and starts.

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Last Updated: May 25, 2018

Not getting the required amount of sleep.

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Last Updated: May 25, 2018

A temporary inability to move or speak while falling asleep or upon waking.

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Last Updated: Jun 13, 2017

The act of getting up and walking around while asleep.

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Last Updated: Jun 13, 2017

A condition in which abnormally high numbers of bacteria grow in the small intestine.

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Last Updated: Jun 13, 2017

A fast-growing type of lung cancer commonly caused by smoking.

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Last Updated: Jun 13, 2017

A contagious, disfiguring, and often deadly disease caused by the smallpox virus.

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Last Updated: Jun 13, 2017

An injury caused by a bite from a snake.

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Last Updated: Jun 13, 2017

A sudden blast of air or mucus expelled from the mouth and nose.

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Last Updated: May 25, 2018

Hoarse or harsh sound from nose or mouth that occurs when breathing is partially obstructed while sleeping.

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Last Updated: May 26, 2018

Chronic mental health condition in which social interactions cause irrational anxiety.

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Last Updated: Jun 13, 2017

A mental disorder causing dysfunction in thinking, perceiving, and relating to others.

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Last Updated: Jun 13, 2017

A type of cancerous tumor that originates in soft tissue.

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Last Updated: Jun 13, 2017

A group of infections including hookworm, roundworm, and whipworm.

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Last Updated: Jun 13, 2017

A mental disorder in which someone has pain or symptoms without a physical cause.

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Last Updated: Jun 13, 2017

Excessive sleepiness.

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Last Updated: May 25, 2018

Pain or irritation in the throat that can occur with or without swallowing, often accompanies infections, such as a cold or flu.

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Last Updated: May 26, 2018

Muscle overactivity that occurs when communication between the brain and spinal cord is affected by injury or illness.

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Last Updated: May 26, 2018

An injury caused by venom from a spider's bite.

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Last Updated: Jun 13, 2017

Occurs when one or more bones in the spine weaken and crumple.

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Last Updated: Jun 13, 2017

Damage to any part of the spinal cord or nerves at the end of the spinal canal.

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Last Updated: Jun 13, 2017

A condition which refers to a problem with a rubbery disk between the spinal bones.

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Last Updated: Jun 13, 2017

A narrowing of the spinal canal.

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Last Updated: Jun 13, 2017

An enlarged spleen.

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Last Updated: Jun 13, 2017

Inflammation of the spine (vertebrae).

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Last Updated: Jun 13, 2017

A group of inflammatory conditions that cause arthritis, especially of the spine.

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Last Updated: Jun 13, 2017

A spinal disorder in which a bone (vertebra) slips forward onto the bone below it.

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Last Updated: Jun 13, 2017

A general term for age-related wear and tear of the spinal disks.

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Last Updated: Jun 13, 2017

An infectious disease with a characteristic rash, often transmitted by the bite of a tick.

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Last Updated: Jun 13, 2017

A stretching or tearing of ligaments, fibrous tissue that connects bones and joints.

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Last Updated: Jun 13, 2017

An injury that occurs when the ankle rolls, twists, or turns in an awkward way.

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Last Updated: Jun 13, 2017

An injury of the tissue (ligament) connecting the bones at the base of the thumb.

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Last Updated: Jun 13, 2017

Thick mixture of saliva and phlegm that's coughed up from the respiratory tract.

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Last Updated: May 24, 2018

Anxiety and panic caused by the thought of performing.

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Last Updated: May 25, 2018

An infection caused by usually harmless bacteria commonly found on the skin or in the nose.

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Last Updated: Jun 13, 2017

An infection caused by staphylococcus bacteria commonly found on skin or in the nose.

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Last Updated: Jun 13, 2017

Long-term, severe deprivation of nutrition.

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Last Updated: May 24, 2018

Oily, smelly stools, which often float.

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Last Updated: May 25, 2018

An abnormal narrowing of an open space in the body, such as a blood vessel.

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Last Updated: Jun 13, 2017

An abnormal narrowing of a blood vessel, duct, canal, or tube.

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Last Updated: May 24, 2018

A rare, serious disorder of the skin and mucous membranes.

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Last Updated: Jun 13, 2017

A sensation of soreness or discomfort in the neck when trying to move it or turn the head from side to side.

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Last Updated: May 24, 2018

A condition in which the trunk and limbs stiffen, making it hard to walk.

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Last Updated: Jun 13, 2017

Limited or decreased flexibility, commonly in the joints.

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Last Updated: May 24, 2018

Cancer that occurs in the stomach.

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Last Updated: Jun 13, 2017

A condition that causes painful swelling and sores inside the mouth.

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Last Updated: Jun 13, 2017

Disorder in which the eyes don't look in exactly the same direction at the same time.

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Last Updated: Jun 13, 2017

A stretching or tearing of a muscle or a tissue connecting muscle to bone (tendon).

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Last Updated: Jun 13, 2017

Also called strep throat, a bacterial infection that may cause a sore, scratchy throat.

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Last Updated: Jun 13, 2017

A tiny crack in a bone caused by repetitive stress or force, often from overuse.

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Last Updated: Jun 13, 2017

Indented, reddened streaks that usually appear on the skin from rapid weight gain or from weight changes.

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Last Updated: May 24, 2018

A high-pitched, whistling sound most often heard while taking in a breath.

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Last Updated: Jun 13, 2017

A disruption of blood supply to part of the brain, starving brain tissue of oxygen.

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Last Updated: Jun 13, 2017

A speech disorder involving frequent problems with the normal fluency and flow of speech.

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Last Updated: May 24, 2018

A red, painful lump near the edge of the eyelid that may look like a boil or pimple.

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Last Updated: Jun 13, 2017

Bleeding in the space between the brain and the tissue covering the brain.

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Last Updated: Jun 13, 2017

A pool of blood between the brain and its outermost covering.

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Last Updated: May 24, 2018

A pattern of repeated drug or alcohol use that often interferes with health, work, or social relationships.

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Last Updated: Jun 13, 2017

Thinking about or planning suicide.

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Last Updated: Jun 13, 2017

A type of skin burn resulting from too much exposure to sunlight or sunlamps.

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Last Updated: Jun 13, 2017

A faster than normal heart rate beginning above the heart's 2 lower chambers.

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Last Updated: Jun 13, 2017

Puffiness caused by excess fluid trapped in the body's tissues.

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Last Updated: May 25, 2018

A human respiratory infection caused by an influenza strain that started in pigs.

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Last Updated: Jun 13, 2017

Buildup of fluid in the foot and ankle area.

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Last Updated: May 24, 2018

Immune system glands that usually enlarge in response to a bacterial or viral infection, but sudden swelling of many lymph nodes may indicate cancer.

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Last Updated: May 25, 2018

Fainting, or a sudden temporary loss of consciousness.

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Last Updated: May 25, 2018

A condition in which high levels of a hormone cause the body to retain water.

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Last Updated: Jun 13, 2017

Inflammation of the smooth lining of a joint or tendon.

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Last Updated: Jun 13, 2017

A bacterial infection usually spread by sexual contact that starts as a painless sore.

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Last Updated: Jun 13, 2017

The development of a fluid-filled cyst in the spinal cord.

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Last Updated: Jun 13, 2017

An inflammatory disease caused when the immune system attacks its own tissues.

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Last Updated: Jun 13, 2017

T

A rapid or pounding heartbeat that may be regular or irregular, but is out of proportion to age and level of exertion or activity.

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Last Updated: May 26, 2018

Fast, shallow breathing.

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Last Updated: Jun 13, 2017

A tapeworm infection that affects the digestive system.

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Last Updated: Jun 13, 2017

A temporary heart condition that may feel like a heart attack.

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Last Updated: Jun 13, 2017

An infection caused by consuming tapeworm eggs or larvae.

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Last Updated: Jun 13, 2017

A condition affecting the nerves, often caused by long-term use of some psychiatric drugs.

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Last Updated: Jun 13, 2017

A rare, inherited disorder that destroys nerve cells in the brain and spinal cord.

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Last Updated: Jun 13, 2017

A common injury in which forceful twisting causes certain tissue in the knee to tear.

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Last Updated: Jun 13, 2017

Dilated small blood vessels on the skin or mucous membranes, anywhere in the body.

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Last Updated: May 25, 2018

A reversible condition in which hair falls out after a stressful experience.

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Last Updated: Jun 13, 2017

An inflammation in the blood vessels, called arteries, in the temples.

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Last Updated: Jun 13, 2017

Pain and compromised movement of the jaw joint and the surrounding muscles.

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Last Updated: Jun 13, 2017

A condition in which the tissue connecting muscle to bone becomes inflamed.

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Last Updated: Jun 13, 2017

A breakdown of tendon tissue caused by repetitive motions or overuse.

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Last Updated: Jun 13, 2017

An irritation of the tissue connecting the forearm muscle to the elbow.

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Last Updated: Jun 13, 2017

Inflammation of the tendon sheath where muscle connects to bone.

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Last Updated: Jun 13, 2017

A mild to moderate pain often described as feeling like a tight band around the head.

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Last Updated: Jun 13, 2017

A type of germ cell tumor that may contain several types of body tissue.

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Last Updated: Jun 13, 2017

Cancer in the male organs that make male hormones and sperm (testicles).

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Last Updated: Jun 13, 2017

Pain that occurs in or around one or both testicles.

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Last Updated: May 26, 2018

A twisting of the male organ that makes hormones and sperm (testicle).

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Last Updated: Jun 13, 2017

A serious bacterial infection that causes painful muscle spasms and can lead to death.

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Last Updated: Jun 13, 2017

A rare condition caused by a combination of four heart defects that are present at birth.

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Last Updated: Jun 13, 2017

A blood disorder involving less than normal amounts of an oxygen-carrying protein.

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Last Updated: Jun 13, 2017

A pregnancy in the last three months.

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Last Updated: Jun 13, 2017

A craving for something to drink, often associated with dehydration.

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Last Updated: May 24, 2018

A group of disorders that occur when certain blood vessels or nerves are compressed.

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Last Updated: Jun 13, 2017

A condition in which blood vessels get inflamed, swollen, and blocked with clots.

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Last Updated: Jun 13, 2017

A low number of platelets in the blood.

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Last Updated: May 24, 2018

A condition in which the body overproduces the blood cells that help clotting.

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Last Updated: Jun 13, 2017

A condition that increases a person's risk of forming clumped masses of blood (clots).

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Last Updated: Jun 13, 2017

A condition in which a blood clot blocks 1 or more veins, often in the legs.

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Last Updated: Jun 13, 2017

The development of a mass of clumped blood (blood clot) in a blood vessel.

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Last Updated: Jun 13, 2017

A blood clot that forms on and remains attached to the wall of a blood vessel.

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Last Updated: Jun 13, 2017

A cancer in the butterfly-shaped gland at the base of the neck (thyroid).

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Last Updated: Jun 13, 2017

Any dysfunction of the butterfly-shaped gland at the base of the neck (thyroid).

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Last Updated: Jun 13, 2017

A lump that forms within the butterfly-shaped gland at the base of the neck (thyroid).

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Last Updated: Jun 13, 2017

A compulsive, repetitive sound or movement that’s often difficult to control.

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Last Updated: May 24, 2018

An illness acquired from a tick bite.

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Last Updated: Jun 13, 2017

A fungal infection of the scalp and hair shafts, often called ringworm of the scalp.

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Last Updated: Jun 13, 2017

Fungal infection in the skin of the genitals, inner thighs, and buttocks (jock itch).

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Last Updated: Jun 13, 2017

A fungal infection that usually begins between the toes, also called athlete's foot.

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Last Updated: Jun 13, 2017

A common fungal infection that causes small, discolored patches of skin.

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Last Updated: Jun 13, 2017

Ringing or buzzing noise in one or both ears that may be constant or come and go, often associated with hearing loss.

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Last Updated: May 25, 2018

A seizure that involves a loss of consciousness and violent muscle contractions.

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Last Updated: Jun 13, 2017

An inflammation of the 2 oval-shaped pads of tissue at the back of the throat.

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Last Updated: Jun 13, 2017

A lump of calcified material in the fleshy pads at the back of the throat (tonsils).

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Last Updated: Jun 13, 2017

A condition in which a tooth fails to fully emerge (erupt).

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Last Updated: Jun 13, 2017

Pain or inflammation in or around the tooth, often caused by tooth decay or infection.

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Last Updated: May 25, 2018

A rare condition in which the neck muscles contract, causing the head to twist to one side.

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Last Updated: Jun 13, 2017

A nervous system disorder involving repetitive movements or unwanted sounds.

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Last Updated: Jun 13, 2017

A rare, life-threatening complication of certain bacterial infections.

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Last Updated: Jun 13, 2017

A disease that results from infection with the Toxoplasma gondii parasite.

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Last Updated: Jun 13, 2017

A bacterial infection that affects the eyes.

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Last Updated: Jun 13, 2017

A brief attack, like a stroke, but lasts only minutes and causes no permanent damage.

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Last Updated: Jun 13, 2017

The rejection of a transplanted organ, limb, or tissue by the immune system.

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Last Updated: Jun 13, 2017

Brain dysfunction caused by an outside force, usually a violent blow to the head.

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Last Updated: Apr 25, 2018

An inherited condition in which some bones and tissues in the face aren't developed.

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Last Updated: Jun 13, 2017

An allergy to nuts that grow on trees.

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Last Updated: Jun 13, 2017

Involuntary shaking or movement, ranging from slight to severe, and commonly affecting hands, legs, face, head, or vocal cords.

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Last Updated: May 25, 2018

A type of roundworm infection.

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Last Updated: Jun 13, 2017

A sexually transmitted infection caused by a parasite.

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Last Updated: Jun 13, 2017

A disorder that involves recurrent, irresistible urges to pull out body hair.

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Last Updated: Jun 13, 2017

A chronic pain condition affecting the trigeminal nerve in the face.

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Last Updated: Jun 13, 2017

A condition in which a finger gets stuck in a bent position and then snaps straight.

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Last Updated: Jun 13, 2017

A genetic disorder in which a person has 3 copies of a chromosome instead of 2.

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Last Updated: Jun 13, 2017

A common type of chronic hip pain.

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Last Updated: Nov 3, 2017

A potentially serious infectious bacterial disease that mainly affects the lungs.

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Last Updated: Jun 13, 2017

An inherited condition in which noncancerous lesions grow in the body.

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Last Updated: Jun 13, 2017

A chromosomal disorder that affects only females.

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Last Updated: Jun 13, 2017

A chronic condition in which the pancreas produces little or no insulin.

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Last Updated: Jun 13, 2017

A chronic condition that affects the way the body processes blood sugar (glucose).

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Last Updated: Jun 13, 2017

A bacterial disease spread through contaminated food and water or close contact.

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Last Updated: Jun 13, 2017

A bacterial disease spread by lice or fleas.

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Last Updated: Jun 13, 2017

U

A chronic, inflammatory bowel disease that causes inflammation in the digestive tract.

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Last Updated: Jun 13, 2017

A condition in which the long nerve in the arm gets compressed or irritated.

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Last Updated: Jun 13, 2017

A condition in which the intestine protrudes through the abdominal muscles.

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Last Updated: Jun 13, 2017

A weight considered too low for good health.

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Last Updated: May 25, 2018

Serious new or changed chest pain caused by reduced blood flow to the heart (angina).

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Last Updated: Apr 25, 2018

Physical discomfort affecting the upper part of the back that may vary from a dull ache to incapacitating pain.

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Last Updated: May 25, 2018

Bleeding in the esophagus, the stomach, or the first part of the small intestine.

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Last Updated: Jun 13, 2017

A common viral infection that affects the nose, throat, and airways.

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Last Updated: Jun 13, 2017

A condition involving abnormally high levels of waste products in the blood.

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Last Updated: Jun 13, 2017

Inflammation of the tube carrying urine from the bladder to the outside of the body.

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Last Updated: Jun 13, 2017

Loss of bladder control, varying from a slight loss of urine after sneezing, coughing, or laughing to complete inability to control urination.

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Last Updated: May 26, 2018

Difficulty urinating and completely emptying the bladder.

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Last Updated: May 25, 2018

An infection in any part of the urinary system, the kidneys, bladder, or urethra.

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Last Updated: Jun 13, 2017

A type of cancer that begins in the uterus.

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Last Updated: Jun 25, 2019

Tightening of uterine muscle fibers that occurs briefly and intermittently throughout pregnancy and more regularly and forcefully during active labor.

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Last Updated: May 25, 2018

Noncancerous growths of the uterus that often appear during the childbearing years.

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Last Updated: Jun 13, 2017

An inflammation of the middle layer of the eye (uvea).

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Last Updated: Jun 13, 2017

V

Any vaginal bleeding unrelated to normal menstrual periods.

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Last Updated: May 24, 2018

Cancer that occurs in the vagina.

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Last Updated: Jun 13, 2017

A mix of fluid and cells from the vagina that varies from whitish and sticky to clear and watery, possibly associated with an odor.

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Last Updated: May 25, 2018

Expulsion of air or gas from the vagina.

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Last Updated: May 24, 2018

An inflammation of the vagina that can result in discharge, itching, and pain.

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Last Updated: Jun 13, 2017

An infection with the fungus coccidioides, sometimes called valley fever.

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Last Updated: Jun 13, 2017

An enlargement of the veins within the scrotum.

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Last Updated: Jun 13, 2017

Gnarled, enlarged veins, most commonly appearing in the legs and feet.

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Last Updated: Jun 13, 2017

Brain damage caused by multiple strokes.

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Last Updated: May 26, 2018

An inflammation of the blood vessels that causes changes in the blood vessel walls.

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Last Updated: Jun 13, 2017

A widening of blood vessels, usually near the surface of skin, leading to increased blood flow with flushing or warmth.

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Last Updated: May 25, 2018

A sudden drop in heart rate and blood pressure, often in reaction to a stressful trigger.

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Last Updated: Jun 13, 2017

Fainting caused by an overreaction to certain triggers.

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Last Updated: May 24, 2018

A condition in which a blood clot blocks 1 or more veins.

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Last Updated: Jun 13, 2017

A wound on the leg or ankle caused by abnormal or damaged veins.

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Last Updated: Jun 13, 2017

An irregular heart rhythm that results in a rapid and erratic heartbeat.

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Last Updated: Jun 13, 2017

A heart defect in which there's an opening in the heart between the lower chambers.

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Last Updated: Jun 13, 2017

A condition in which the lower chambers of the heart (ventricles) beat very quickly.

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Last Updated: Jun 13, 2017

A sense that inside the head or the room is spinning, often triggered by changes in head position.

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Last Updated: May 26, 2018

A noncancerous tumor on the main nerve leading from the inner ear to the brain.

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Last Updated: Jun 13, 2017

Any of a group of infectious diseases that interfere with the blood's ability to clot.

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Last Updated: Jun 13, 2017

An inflammation of the membranes surrounding the brain and spinal cord.

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Last Updated: Jun 13, 2017

A disease caused by infection with leishmania parasites.

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Last Updated: Jun 13, 2017

The ability to visually identify forms, letters and symbols at a standardized distance away.

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Last Updated: May 25, 2018

Too little vitamin A in the diet.

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Last Updated: Jun 13, 2017

Anemia or nervous system injury from lower than normal amounts of vitamin B-12.

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Last Updated: Jun 13, 2017

A disease that causes the loss of skin color in blotches.

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Last Updated: Jun 13, 2017

An obstruction due to twisting or knotting of the gastrointestinal tract.

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Last Updated: Jun 13, 2017

Forcefully expelling the stomach's contents out of the mouth.

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Last Updated: May 25, 2018

A bleeding disorder caused by low levels of clotting protein in the blood.

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Last Updated: Jun 13, 2017

A type of cancer that occurs on the outer surface area of female genitals.

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Last Updated: Jun 13, 2017

Chronic, unexplained pain in the area around the opening of the vagina.

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Last Updated: Jun 13, 2017

W

A small, fleshy bump on the skin or mucous membrane caused by human papillomavirus.

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Last Updated: Jun 13, 2017

A condition that occurs from drinking too much water, upsetting electrolyte balances.

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Last Updated: Jun 13, 2017

An accumulation of fluid in body tissues and cavities.

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Last Updated: May 24, 2018

Illnesses acquired from untreated or contaminated water.

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Last Updated: Jun 13, 2017

Decreased muscle strength.

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Last Updated: May 24, 2018

A condition that causes inflammation of the blood vessels.

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Last Updated: Jun 13, 2017

Pounds added to body mass, often resulting from overeating or lack of physical activity.

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Last Updated: May 25, 2018

Loss of weight that may be intentional or unintentional.

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Last Updated: May 25, 2018

An infection caused by a virus transmitted by mosquitoes.

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Last Updated: Jun 13, 2017

An allergy to foods containing wheat.

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Last Updated: Jun 13, 2017

A high-pitched whistling sound made while breathing.

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Last Updated: May 25, 2018

A neck injury that can occur when the head suddenly moves backward and then forward.

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Last Updated: Jun 13, 2017

A kidney cancer that mainly affects children ages 3 to 4.

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Last Updated: Apr 25, 2018

An inherited disorder that causes too much copper to accumulate in the organs.

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Last Updated: Jun 13, 2017

A syndrome in which an extra electrical pathway in the heart causes a rapid heartbeat.

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Last Updated: Jun 13, 2017

An injury, damage, or trauma to the body, ranging from minor to life-threatening.

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Last Updated: Jun 13, 2017

A line, crease, or a fold in the skin.

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Last Updated: May 25, 2018

Discomfort in the wrist area, usually caused by injury or long-term conditions.

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Last Updated: May 26, 2018

X

Dry skin.

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Last Updated: May 24, 2018

An unusually dry mouth, often caused by medication.

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Last Updated: May 26, 2018

Y

A deep, involuntary breath of air, most often associated with sleepiness.

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Last Updated: May 25, 2018

A chronic bacterial infection that affects the skin, bone, and cartilage.

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Last Updated: Jun 13, 2017

A viral infection spread by a particular species of mosquito.

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Last Updated: Jun 13, 2017

M

A form of skin cancer that develops in the cells of the outer layer of the skin.

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Last Updated: Jun 21, 2019