This heart problem that is present at birth causes a hole between the heart's upper chambers. It can be treated.
Disease
Autism spectrum disorder
This condition related to brain development causes problems in getting along with others socially and communicating. Symptoms and severity can vary widely.
Disease
Bee sting
Learn about symptoms, treatment, self-care tips and prevention of bee stings, which in some people cause severe allergic reaction.
Disease
Bladder stones
Minerals in urine can form crystals when the bladder does not empty all the way.
Disease
Bone spurs
Joint damage due to osteoarthritis is the most common cause of these bony growths.
Disease
Broken heart syndrome
Learn more about this temporary heart muscle condition that can mimic a heart attack. It may be triggered by stressful events, such as a loved one's death.
Disease
Brugada syndrome
Learn about the symptoms, causes and treatments for this heart rhythm condition that is sometimes inherited.
Disease
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.
Disease
Canker sore
Canker sore — Learn about the causes, treatment and prevention of this painful mouth sore.
Disease
Carcinoid syndrome
Find out about skin flushing and other symptoms of this syndrome caused by a rare cancer called a carcinoid tumor.
Disease
Cardiogenic shock
Most often the result of a large or severe heart attack, this rare condition can be deadly if not treated right away.
Disease
Carpal tunnel syndrome
Learn more about the symptoms and treatment of this common nerve condition affecting the hand and arm.