What are the common symptoms of duschenne muscular dystrophy?

Weakness: Duchenne's muscular dystrophy (dmd) is caused by a faulty protein. It results in weakness that starts in the hip girdle and progresses to other areas of the body. It can result in scoliosis and tight muscles. Later in the course it can result in loss of function and frequent respiratory infections. The disease is currently incurable, but steroids can often delay the progression of symptoms.