Abnormal congenital condition characterized by progressive weakness and wasting of the leg and pelvic muscles. Often involves the heart muscle. Affects only male children. Symptoms usually begin between the ages of 3 and 5. Currently not curable.
An X-linked recessive disorder of muscle caused by an absence of a protein known as dystrophin. Symptoms are caused by muscle weakness that results in progressive difficulty with walking, mobility and activities of daily living. There is presently no cure or treatment. (See Deflazacort).
Also called infantile muscular atrophy, this birth defect causes severe weakness, delayed walking and other problems. It occurs only in boys.