Abstract Number: 1278 • 2019 ACR/ARP Annual Meeting
Inpatient Epidemiology of Dermatomyositis and Polymyositis in the United States
Background/Purpose: Dermatomyositis (DM) and polymyositis (PM), collectively known as idiopathic inflammatory myositis (IIM), are autoimmune disorders characterized by inflammation of skeletal muscle, especially in the…