Fitness basics
Learning Center
Partial anomalous pulmonary venous return
In this heart problem present at birth, some of the blood vessels of the lungs connect to the wrong places in the heart. Learn when treatment is needed.
Atypical hyperplasia of the breast
Learn how a diagnosis of atypical lobular hyperplasia or atypical ductal hyperplasia affects your risk of breast cancer and what you can do.
Broken collarbone
This common injury is usually the result of falling, playing sports or being in a traffic accident.
Intermittent explosive disorder
This mental health condition involves sudden bouts of impulsive, aggressive, violent behavior or verbal outbursts that cause major distress in life.
Peritonitis
Learn about the causes, symptoms and treatment of peritonitis.
Retractile testicle
Find out about this condition that allows the testicle to move between the scrotum and groin.
Separation anxiety disorder
This is intense or prolonged separation anxiety that interferes with school or other daily activities or includes panic attacks. Learn about treatment.
Mood disorders
These conditions affect emotions. Depression causes a feeling of deep sadness. Bipolar disorder goes back and forth from being very sad to being very happy.
Desmoplastic small round cell tumors
These rare, aggressive cancers most often form in the abdomen. Learn about DSRCT treatments, including surgery, chemotherapy and radiation therapy.
Congenital myasthenic syndromes
These rare hereditary conditions result in a problem in nerve stimulation, causing muscle weakness that worsens with physical activity.
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