Becker muscular dystrophy (BMD) is a neuromuscular disease characterized by progressive muscle wasting and weakness due to degeneration of skeletal, smooth and cardiac muscle. The disease is Becker muscular dystrophy (Monarch Disease Ontology identifier MONDO_0010311). Also known as: BMD, Becker dystrophinopathy, Becker muscular dystrophy, X-linked recessive, benign congenital myopathy, benign pseudohypertrophic muscular dystrophy.