Medical Library

Arthritis is swelling and pain of the joints. When this problem is chronic, the most common form is juvenile idiopathic arthritis (JIA).

Nephrotic syndrome can occur at any age but is most common between the ages of 18 months and 8 years. Boys are affected more often than girls. A child may come to the child care or school with the diagnosis or may develop it while enrolled.

Marfan syndrome is an inherited condition. It affects the tissues that connect parts of the body.

Mitochondrial disorders are a diverse group of diseases caused by damage to small structures found in human cells that are essential in converting food to energy. The result is decreased energy production and associated symptoms.

Muscular dystrophy is a group of genetic diseases that cause muscle wasting and weakness. The most common type is Duchenne muscular dystrophy, which is progressive and occurs only in boys.