Medications
Learning Center
Aspirin allergy: What are the symptoms?
An aspirin allergy or sensitivity can cause serious symptoms.
Arcus senilis: A sign of high cholesterol?
With this condition, older adults develop a gray arc around the cornea of the eyes.
Antibiotics: Are you misusing them?
The overuse of antibiotics creates antibiotic-resistant germs. Protect yourself and others by using antibiotics wisely.
Antibiotics and alcohol
Alcohol doesn't make antibiotics less effective. But it's still a good idea not to drink alcohol while taking antibiotics.
Anal pain
Anal pain: Symptom — Overview covers definition, possible causes of this common symptom.
Amenorrhea
Absence of menstruation (amenorrhea) may be linked to an underlying, treatable problem. Learn about amenorrhea causes and when to seek help.
Alzheimer's stages: How the disease progresses
Alzheimer's stages — common behaviors as the disease progresses.
Active surveillance for prostate cancer
Learn about why doctors may recommend active surveillance for prostate cancer and what to expect.
Abnormal sperm morphology: What does it mean?
Abnormal sperm morphology may be a contributing factor in male infertility.
Abdominal pain
Everyone experiences abdominal pain from time to time. Find out when it might be cause for concern.
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