Dermatomyositis

Dermatomyositis (DM), also known as skin heterochromic dermatomyositis (poikilodermatomyositis), is one of the autoimmune connective tissue diseases. It is a non-purulent inflammation that mainly affects striated muscle and is mainly infiltrating lymphocytes Lesions can be associated with or without multiple skin lesions, and can also be accompanied by various visceral lesions. Polymyositis (PM) refers to the patients in this group without skin damage.