DMD and Duchenne muscular dystrophy: Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD) are neuromuscular disorders caused by a mutation in the dystrophin gene on the X-chromosome, which leads to progressive muscle weakness.4, 5 Individuals diagnosed with DMD typically lose the ability to walk independently by age 13 years, and progress to cardiac and respiratory complications.4, 5 BMD is typically a milder phenotype with a variable progression.5, 6 In the recently published revisions to the Duchenne muscular dystrophy (DMD) care considerations, health care transition planning is emphasized.7