what are the symptoms of duchenne muscular dystrophy dmd
Duchenne Muscular Dystrophy. Duchenne muscular dystrophy is the most common and severe form of the disease. It usually starts when a child is between ages 2 and 5. Symptoms of Duchenne muscular dystrophy include: 1  Muscle weakness that begins in the hips, pelvis, and legs.2  Difficulty standing.3  Trouble learning to sit independently and walk.4  Unsteady, waddling gait.t usually starts when a child is between ages 2 and 5. Symptoms of Duchenne muscular dystrophy include: 1  Muscle weakness that begins in the hips, pelvis, and legs. 2  Difficulty standing. 3  Trouble learning to sit independently and walk. 4  Unsteady, waddling gait.