Symptoms of Dermatomyositis

Dermatomyositis is an autoimmune disease that primarily affects skeletal muscles, characterized by non-suppurative inflammatory lesions dominated by lymphocytic infiltration, often accompanied by various skin manifestations. Its symptoms mainly include: 1. Skin lesions:表现为紫色或红色的皮疹，常见于面部、胸部、手臂、腿部等，可能伴有水肿、发热或疼痛。此外，还可能出现角化栓塞、皮肤萎缩和瘢痕等症状。 Skin lesions:表现为紫色或红色的皮疹，常见于面部、胸部、手臂、腿部等，可能伴有水肿、发热或疼痛。此外，还可能出现角化栓塞、皮肤萎缩和瘢痕等症状。 Skin lesions: Purple or red rashes commonly appear on the face, chest, arms, legs, etc., and may be accompanied by edema, fever, or pain. In addition, symptoms such as keratin plug formation, skin atrophy, and scarring may also occur. 2. Muscle symptoms: Muscle weakness is a typical symptom of dermatomyositis. Patients experience muscle weakness and fatigue, especially in the proximal muscle groups of the upper and lower limbs. Daily activities such as raising the hands, lifting the head, and squatting may become difficult. At the same time, patients may also experience muscle pain and tenderness. 3. Systemic symptoms: In addition to skin and muscle symptoms, dermatomyositis may also present with systemic symptoms such as fever, weight loss, anorexia, fatigue, joint pain, and muscle atrophy.