title: Polymyositis and dermatomyositis in adults.
mesh_terms: D000208:Acute Disease; D000328:Adult; D002908:Chronic Disease; D003882:Dermatomyositis / Q000453:epidemiology / Q000503:physiopathology*; D003937:Diagnosis, Differential; D006801:Humans; D009220:Myositis / Q000175:diagnosis / Q000188:drug therapy / Q000453:epidemiology / Q000503:physiopathology* / Q000532:radiotherapy; D011379:Prognosis