Tween and teen health
Learning Center
Turner syndrome
Turner syndrome affects only females as the result of a missing or partially missing X chromosome, causing a variety of medical and developmental problems.
Lupus
Learn how this disease can affect your joints, skin, kidneys and other areas of your body, along with how to get symptom control.
Ascariasis
Learn more about the causes, treatment and prevention of this roundworm infection.
Broken nose
A broken nose can cause pain, swelling and bruising around your nose and eyes. Surgery usually isn't necessary.
Exercise-induced asthma
Regular exercise is beneficial in many ways, but for some people, exercise can trigger breathing problems. Medicine can help.
Giardia infection (giardiasis)
Stomach cramps, nausea and watery diarrhea could indicate a giardia infection. Find out how to treat and prevent this waterborne parasite.
Gilbert syndrome
This inherited liver condition affects the liver's ability to break down red blood cells. It usually has no serious medical consequences.
Heart murmurs
An irregular heart sound may be harmless or worrisome. Know the causes of heart murmurs and when treatment is needed.
Heat rash
Learn more about the symptoms, causes and treatment of this heat-related problem of the skin that affects people of all ages.
Horner syndrome
Find out about Horner syndrome, an interruption in nerve signals from the brain to the eye and face on one side of the body.
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