NEW YORK (Reuters Health) - Duchenne’s muscular dystrophy (DMD) is known to delay children’s development of movement and coordination, but now new research indicates that it may also slow language development.DMD occurs in roughly 1 of every 3500 male births, according to the report in The Journal of Pediatrics. The disease is thought of as mainly affecting muscles, because children become progressively weaker. However, slowness with words has been described in children and adolescents with the disease.