Table of Contents What is Duchenne muscular dystrophy (DMD)? What are the symptoms of DMD? What causes DMD? What are DMD “carriers”? What is the life expectancy in DMD? What treatments are available for DMD? What is the status of DMD research? Additional Reading Additional Links What is Duchenne muscular dystrophy ? In the early stages, DMD affects the shoulder and upper arm muscles and the muscles of the hips and thighs. These weaknesses lead to difficulty in rising from the floor ... Introduction Duchenne muscular dystrophy (DMD) is a progressive genetic condition which affects the muscles, causing muscle weakness. It is a serious condition which starts in early childhood. The muscle weakness is not noticeable at birth, even though the child is born with the gene which causes it. The muscle weakness develops gradually, usually becomes evident between the age of three and five years and functional level is maintained between three and six years in these children. Symptoms ... Duchenne muscular dystrophy is an X-linked progressive, muscle-wasting disease that manifests in childhood as difficulties with movement. This Primer by Aartsma-Rus and colleagues discusses the ... Duchenne muscular dystrophy (DMD) is one of the most severe forms of inherited muscular dystrophies. It is the most common hereditary neuromuscular disease and does not exhibit a predilection for any race or ethnic group.