This video tells us about the muscle myositis known as dermatomyositis (DMM), clinical features, pathological manifestation, microscopic slide and treatment. Dermatomyositis is an uncommon inflammatory disease marked by muscle weakness and a distinctive skin rash. Inflammatory myositis is divided into different types and (DMM) is one of them. 0:27 Introduction 0:41 Objective 0:55 Dermatomyositis 2:27 Clinical manifestation 4:37 Pathophysiology analysis 5:12 Comparative microscopic slide 5:34 Treatment 5:54 End