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Dermatomyositis is an uncommon inflammatory disease marked by muscle weakness and a distinctive skin rash [1]. It is part of a group of rare diseases called the inflammatory myopathies that involve chronic (long-standing) muscle inflammation, muscle weakness and skin rash [2][ 4][ 5][ 6]. The symptoms generally include patchy skin rashes and worsening muscle weakness [3], which can be accompanied by other symptoms such as fatigue, joint pain or swelling, difficulty swallowing or breathing problems [4]. Juvenile dermatomyositis (JDM) is a form of dermatomyositis that affects children and has varying symptoms including skin rashes and weakening muscles[5].

[1]: Dermatomyositis - Symptoms and causes - Mayo Clinic (
[2]: Dermatomyositis | Johns Hopkins Medicine (
[3]: Dermatomyositis - The Myositis Association (
[4]: Dermatomyositis - Diseases | Muscular Dystrophy Association (
[5]: Juvenile Dermatomyositis (


Dermatomyositis is an inflammatory disorder that affects the skin and muscles. It is characterized by a distinctive rash on the face, neck, chest, elbows, knees and knuckles as well as muscle weakness. The cause of dermatomyositis is unknown but it may be related to autoimmune disorders or viral infections. Treatment typically involves medications such as corticosteroids and immunosuppressants to reduce inflammation and improve muscle strength. Physical therapy can also help with strengthening weakened muscles.