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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.
Hirschsprung's disease
This digestive disorder that's present at birth affects the nerves in the colon. It causes severe constipation but can be treated.
Common cold in babies
This viral infection causes a runny nose and nasal congestion in babies. Find out how to ease symptoms and when to see a doctor.
Group B strep disease
This common bacterium, usually harmless in healthy adults, can cause serious illness in newborns and adults with certain chronic conditions, such as diabetes.
Diphtheria
This rare but serious bacterial infection can cause organ damage and breathing problems. This disease is often treatable but is also preventable with a vaccine.
Priapism
Understand the symptoms, possible causes and treatment of prolonged erection of the penis, including when to seek emergency care.
CT coronary angiogram
Learn about the risks and results of this imaging test that looks at the arteries that supply blood to the heart.
Bilirubin test
Find out what to expect from a bilirubin test — an important blood test that determines how your liver is functioning.
Ejection fraction: What does it measure?
This measurement, commonly taken during an echocardiogram, shows how well the heart is pumping. Know what results mean.
Male hypogonadism
This condition affects the ability of men's bodies to produce enough testosterone or enough sperm or both.
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