Fitness basics
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Progeria
This genetic disorder is extremely rare and progressive. It causes children to age rapidly, beginning in their first two years of life.
Niemann-Pick disease
A condition passed down in families that affects how the body breaks down and uses fats. Fat buildup in cells damages the nerves, brain and other organs.
Hydrocele
Find out more about the symptoms, causes and treatments for this swelling in the scrotum.
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.
Narcolepsy
Learn more about this sleep disorder that causes periods of involuntary sleep, sleep paralysis and early rapid eye movement (REM) sleep.
Nearsightedness
Tired of squinting at objects in the distance? There are effective treatment options for this eye condition, and some preventive options are emerging.
Pink eye (conjunctivitis)
This highly contagious eye condition can be itchy and uncomfortable. But much like the common cold, it rarely requires medicine or staying home.
Reye's syndrome
Learn more about the causes and treatment of Reye's syndrome, a rare but serious condition causing swelling in the liver and brain.
Peritonitis
Learn about the causes, symptoms and treatment of peritonitis.
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.
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