Muscle wasting begins in the legs and pelvis, then progresses to the muscles of the shoulders and neck, followed by loss of arm muscles and respiratory muscles. The ability to walk may continue to age 40 or more. A CPK may be elevated. A muscle biopsy confirms the diagnosis. There is no known cure for Becker's muscular dystrophy.
Treatment is aimed at control of symptoms to maximize the quality of life.
Activity is encouraged. Physical therapy may be helpful to maintain muscle strength. Orthopedic appliances such as braces and wheelchairs may improve mobility and self-care. Genetic counseling may be advisable. Sons of a male with Becker's muscular dystrophy do not develop the disorder, but daughters may be carriers and the daughter's sons may develop the disorder.