Medications
Learning Center
Abdominal pain
Everyone experiences abdominal pain from time to time. Find out when it might be cause for concern.
Age spots (liver spots)
Learn more about the harmless dark spots on your skin that tend to appear as you age, especially in areas exposed to the sun. Treatment is available.
Alzheimer's or depression: Could it be both?
Alzheimer's and depression have some similar symptoms. Proper treatment improves quality of life.
Alzheimer's stages: How the disease progresses
Alzheimer's stages — common behaviors as the disease progresses.
Amenorrhea
Absence of menstruation (amenorrhea) may be linked to an underlying, treatable problem. Learn about amenorrhea causes and when to seek help.
Anal pain
Anal pain: Symptom — Overview covers definition, possible causes of this common symptom.
Antibiotics and alcohol
Alcohol doesn't lower the effectiveness of most antibiotics. But it's still a good idea to avoid alcohol while taking antibiotics.
Antibiotics: Are you misusing them?
The overuse of antibiotics creates antibiotic-resistant germs. Protect yourself and others by using antibiotics wisely.
Arcus senilis: A sign of high cholesterol?
With this condition, older adults develop a gray arc around the cornea of the eyes.
Aspirin allergy: What are the symptoms?
An aspirin allergy or sensitivity can cause serious symptoms.
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