Fitness basics
Learning Center
Carbon monoxide poisoning
This gas has no color, odor or taste. It can be deadly. Learn how to prevent it.
Vesicoureteral reflux
Learn about what happens if urine flows backward from the bladder. Usually found in children, this condition boosts the risk of urinary tract infections.
Pulmonary atresia with ventricular septal defect
This congenital heart defect affects the valve between the heart and lungs and includes a hole in the heart. Learn the symptoms and how it’s treated.
Tricuspid valve regurgitation
A leaky tricuspid valve may make you feel tired and have difficulty exercising. Learn how this type of heart valve disease is diagnosed and treated.
Heart arrhythmia
Learn about common heart rhythm disorders that can cause your heart to beat too fast, too slow or irregularly.
Mitral valve disease
Learn more about diseases that affect the valve between the left heart chambers, including mitral valve regurgitation and mitral valve stenosis.
Hypospadias
Hypospadias is a birth defect in which the opening of the urethra is located on the underside of the penis instead of the tip. Learn about treatment.
Cavernous malformations
Understand the symptoms that may occur when blood vessels in the brain or spinal cord are tightly packed and contain slow-moving blood.
Shaken baby syndrome
Understand why shaking a baby can cause brain damage, and why getting immediate medical care can save a child’s life or prevent serious health problems.
Dwarfism
Very short stature of 4 feet 10 inches or less that results from a genetic or medical condition is considered dwarfism. Learn about causes and treatment.
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