Picture of Dermatomyositis

Dermatomyositis. Dermatomyositis is a rare autoimmune disease that is characterized by a distinctive red or purplish rash as well as muscle weakness. It usually shows up where muscles are used to straighten joints like knuckles, elbows, knees, toes or even eyelids. Hard painful lumps can occur, most often in children.
Image Source: © Richard Usatine, MD
Text Source: John Hopkins Medicine
National Organization for Rare Disorders
Text Source: John Hopkins Medicine
National Organization for Rare Disorders