Duchenne Muscular Dystrophy and Becker Muscular Dystrophy (Duchenne's Muscular Dystrophy; Becker's Muscular Dystrophy) By Michael Rubin, MDCM, New York Presbyterian Hospital-Cornell Medical Center Reviewed / Revised Jan 2022 | Modified Sep 2022 View Patient Education Symptoms and Signs Diagnosis Treatment Key Points More Information Topic Resources Overview of Duchenne Muscular... Duchenne muscular dystrophy and Becker muscular dystrophy are X-linked recessive disorders characterized by progressive proximal muscle weakness caused by muscle fiber degeneration.