Mental health
Learning Center
Asthma: Limit asthma attacks caused by colds or flu
If you have asthma, find out how to keep your sneeze from turning into a wheeze due to colds or flu.
Asthma: Steps in testing and diagnosis
Think you or your child might have asthma? Here's what's involved in making a diagnosis.
Atrial fibrillation
A fast, pounding heartbeat could be due to AFib, a type of heart rhythm problem. Know the warning signs and when treatment is needed.
Atypical cells: Are they cancer?
Atypical cells appear abnormal, but they aren't necessarily cancerous.
BRCA gene test for breast and ovarian cancer risk
Find out what to expect if you're considering a blood test to determine if you have an increased risk of breast cancer. Learn what your results might mean.
Bacterial vs. viral infections: How do they differ?
Understand the differences between bacterial and viral infections.
Balance exercises
Balance exercises can improve your balance and help prevent falls. See how they're done.
Barium enema
Find out how to prepare and what to expect if your doctor has recommended a barium enema.
Basal cell carcinoma
Learn about symptoms, treatment and prevention of this common skin cancer that often occurs on the head and neck.
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.
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