Consumer health basics
Learning Center
Blocked tear duct
Watery, irritated eyes may occur when your tears can't drain normally. Learn about this common eye condition that affects newborns and sometimes, adults.
Bleeding during pregnancy
Learn what may cause vaginal bleeding during pregnancy and when you should see a doctor about it.
Bleeding after menopause: A concern?
It's unusual to bleed from the vagina after menopause. Learn what health problems can cause it and why you need to see your health care provider.
Bent penis
Learn what can cause a curved erection and when you may need to see a health care provider.
Bedsores (pressure ulcers)
These areas of damaged skin and tissue are caused by sustained pressure — often from a bed or wheelchair — that reduces blood flow to vulnerable areas of the body.
Balance exercises
Balance exercises can improve your balance and help prevent falls. See how they're done.
Baby fat: When is it cause for concern?
Find out when your baby's weight might be of concern and how to promote a healthy weight.
Axona: Medical food to treat Alzheimer's
Axona — Can a supplement treat Alzheimer's disease?
Auditory processing disorder (APD)
This type of hearing loss involves the brain. Learn about ways that can help people with the condition hear better.
Aspirin allergy: What are the symptoms?
An aspirin allergy or sensitivity can cause serious symptoms.
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