Fitness basics
Learning Center
Progeria
This genetic disorder is extremely rare and progressive. It causes children to age rapidly, beginning in their first two years of life.
Coarctation of the aorta
This heart condition is usually present at birth. It's treatable but requires lifelong health checkups. Learn about the causes and treatment.
Myocarditis
Learn about the diagnosis and treatment of this inflammation of the heart muscle that can reduce the heart's ability to pump blood.
Plantar warts
Learn about the causes, treatment and prevention of these hard, sometimes painful growths that appear on the heel or ball of the foot.
Autism spectrum disorder
Autism spectrum disorder is a serious condition related to brain development that impairs the ability to communicate and interact with others.
Choroid plexus carcinoma
This rare type of cancerous brain tumor occurs mainly in children under 2. Treatment usually involves surgery and radiation therapy.
Aortic valve stenosis
Learn more about the symptoms and treatment of this condition that reduces or blocks blood flow from the heart to the body.
Hepatitis A
This contagious liver infection is caused by a virus. Learn more about its symptoms, treatment and prevention, including the hepatitis A vaccine.
Nightmare disorder
Nightmare disorder involves disturbing or scary dreams that awaken you, causing distress or preventing adequate sleep.
Hydronephrosis
Learn about this condition that occurs when urine doesn't drain properly from the upper urinary tract, leading to kidney swelling.
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