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Learning Center
Keratoconus
When your cornea bulges outward, it can cause blurry vision and make your eyes sensitive to light. Find out about symptoms, causes and treatment for this eye condition.
Hydrocele
Find out more about the symptoms, causes and treatments for this swelling in the scrotum.
Nutrition for kids: Guidelines for a healthy diet
See the current children's nutrition recommendations for protein, carbohydrates, more.
Narcolepsy
Learn more about this sleep disorder that causes periods of involuntary sleep, sleep paralysis and early rapid eye movement (REM) sleep.
Cochlear implants
This electronic device improves hearing in people who have severe hearing loss from inner ear damage.
Ureteral obstruction
Learn about what causes blockage of the tubes that carry urine from the kidneys to the bladder, tests you might need and how the condition can be treated.
Epidermolysis bullosa
Learn about a rare inherited disease that often shows up in infancy and causes fragile, blistering skin on the palms and feet. Severe disease may be fatal.
Congenital mitral valve anomalies
These heart problems at birth cause the mitral valve to leak or become narrowed. Know the symptoms and treatment.
Peritonitis
Learn about the causes, symptoms and treatment of peritonitis.
COVID-19 infections by race: What's behind the health disparities?
Understand how underlying health problems, the places where people live and work, and racism can affect who becomes severely ill with COVID-19.
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