RT Book, Section A1 Bissonnette, Bruno A1 Luginbuehl, Igor A1 Engelhardt, Thomas SR Print(0) ID 1164067790 T1 Dermatomyositis and Polymyositis T2 Syndromes: Rapid Recognition and Perioperative Implications, 2e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781259861789 LK accesspediatrics.mhmedical.com/content.aspx?aid=1164067790 RD 2024/03/29 AB Both diseases belong to a group of connective tissue disorders known as idiopathic inflammatory myopathies. They are a multisystem disease characterized by necrotizing inflammatory myopathy of striated muscles and a skin rash, both of unknown etiology. Dermatomyositis is a form of polymyositis accompanied by distinctive skin inflammation and rashes, muscle weakness, and inflammatory myopathy. Polymyositis is characterized by inflammation and degeneration of muscles, especially the proximal musculature, flexion of the neck and torso.