Consumer health basics
Learning Center
Abnormal sperm morphology: What does it mean?
Abnormal sperm morphology may be a contributing factor in male infertility.
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.
Osteochondritis dissecans
Osteochondritis dissecans most commonly affects children who are very active in sports. Learn about the symptoms and treatment of this joint condition.
Eisenmenger syndrome
This complication of an unrepaired congenital heart defect needs close monitoring. Learn how treatment can help manage symptoms and improve quality of life.
Enlarged breasts in men (gynecomastia)
Learn how an imbalance of the hormones estrogen and testosterone can cause breast tissue swelling in boys or men.
Precocious puberty
Read about what can cause children's bodies to begin changing into adult bodies too soon.
Heart valve disease
Learn about this condition in which one or more of the heart valves doesn't work properly.
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