Source:http://linkedlifedata.com/resource/umls/id/C0752352
MSH: Disorders characterized by an abnormal reduction in muscle volume due to a decrease in the size or number of muscle fibers. Atrophy may result from diseases intrinsic to muscle tissue (e.g., MUSCULAR DYSTROPHY) or secondary to PERIPHERAL NERVOUS SYSTEM DISEASES that impair innervation to muscle tissue (e.g., MUSCULAR ATROPHY, SPINAL).,NCI: A group of primary or secondary disorders affecting the muscles. It is characterized by an abnormal reduction in the muscle volume and atrophy. The atrophy may be caused by diseases of the muscle tissues or diseases of the peripheral nerves.