Fitness basics
Learning Center
Bronchitis
Bronchitis is an inflammation of the tubes that carry air to and from the lungs. Coughing and shortness of breath are the major symptoms.
Brucellosis
Brucellosis is an infectious bacterial disease often spread via direct contact with infected animals or contaminated animal products.
Brugada syndrome
Learn about the symptoms, causes and treatments for this heart rhythm condition that is sometimes inherited.
Bruxism (teeth grinding)
Bruxism is a condition in which you grind, gnash or clench your teeth unconsciously when you're awake or while you're sleeping.
Buerger disease
Read about this blood vessel disease that limits blood flow, especially to the hands and feet. Quitting smoking is the best treatment for this condition.
Bulimia nervosa
In this serious eating disorder, people lose control and eat large amounts of food. Then they get rid of it in unhealthy ways by purging, such as vomiting.
Bullous pemphigoid
Learn about the symptoms, treatment and self-care strategies for this blistery skin condition that affects older adults.
Bundle branch block
A delay or blockage in the heart's signaling pathways can interrupt the heartbeat and make it harder for the heart to pump blood.
Bunions
A bunion is a bony bump that forms on the joint at the base of your big toe. Learn more about the causes and treatments of this sometimes painful disorder.
Burning mouth syndrome
This burning sensation, without an obvious cause, may affect the tongue, gums, lips, cheeks, roof of your mouth or large areas of your mouth.
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