[Diagnosis of polymyositis].
D000293:Adolescent; D000328:Adult; D003882:Dermatomyositis / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D009135:Muscular Diseases / Q000175:diagnosis*; D009136:Muscular Dystrophies / Q000175:diagnosis