Dermatomyositis is a rare disease. The estimated incidence is leases per million population. Onset in young people and is often diagnosed late due to rare diseases should easily overlooked. Studied 15 cases of inpatient treatment at the Department of Dermatology - Allergy's, 108 Military Central Hospital from 2004 to 2012 result: 100 percent of patients had lesions consistent around the eyes (Heliotrop), muscle pain and muscle weakness
73.3 percent of patients has elevation of muscle enzymes (CK, LDH), 93.3 percent of patients had electromyogram changes, histologic inflammation of skeletal muscles image.