Aerobic exercise
Learning Center
Birthmarks
Learn to identify types of birthmarks by how the skin looks. Examples include café au lait spot, congenital nevus, port-wine stain and hemangioma.
Birthmarks
Learn to identify types of birthmarks by how the skin looks. Examples include café au lait spot, congenital nevus, port-wine stain and hemangioma.
Bladder exstrophy
This rare birth defect occurs when the bladder develops outside the fetus during pregnancy. The condition can be repaired with surgery.
Bladder infection in men
Although women are more likely to get bladder infections, men can get them, too. Learn about signs and symptoms and what could put you at risk.
Bladder outlet obstruction: Causes in men?
Find out more about the causes of male bladder outlet obstruction and possible next steps.
Blepharitis
This often chronic eyelid condition can be difficult to treat. It might be uncomfortable, but it doesn't usually damage eyesight and isn't contagious.
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.
Blood in semen
Finding blood in your semen can be alarming, but the cause is usually benign. Find out possible causes and when to see a doctor.
Bone and joint problems associated with diabetes
If you have diabetes, you're at increased risk of various bone and joint disorders.
Bone health: Tips to keep your bones healthy
Find out what you can do to promote and protect bone health.
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