Toddler health
Learning Center
Hepatitis A
This contagious liver infection is caused by a virus. Learn more about its symptoms, treatment and prevention, including the hepatitis A vaccine.
Peyronie disease
Understand what causes bent and painful erections and learn what treatments are available.
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.
Hemophilia
In this inherited disorder, the blood lacks one of several clot-forming proteins. The result is prolonged bleeding, which can be life-threatening.
Male infertility
Male infertility often plays a role when couples have trouble conceiving. Find out what causes male infertility and available options for treatment.
X-linked agammaglobulinemia
This genetic disease weakens the immune system, mainly in males, and leads to having infections often.
Pulmonary atresia
This life-threatening heart condition that's present at birth changes the way blood travels from the heart to the rest of the body.
MCAD deficiency
This inherited genetic disorder prevents the breakdown of certain fats needed for energy, leading to dangerously low blood sugar levels if not treated.
Pectus excavatum
Pectus excavatum causes the breastbone to sink into the chest. This can affect heart and lung function. Surgery helps correct the deformity.
Vascular rings
Learn more about this condition in which malformations of the aortic arch encircle the windpipe and esophagus and can press against them.
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