Dermatomyositis causes patients to experience itchy skin symptoms. Dermatomyositis is an autoimmune disease that mainly involves muscles and skin, the specific cause is still unclear, the symptoms mainly include skin damage and myositis-related symptoms, in which dermatomyositis leads to pimples, rashes, plaques, and other skin damage when the patient will appear itchy skin symptoms, the disease is not yet a complete cure. Through correct and standardized treatment, the disease progression of dermatomyositis can be timely and effectively controlled, and some patients can be restored to the normal state and less likely to recur, the treatment is based on drug therapy, and glucocorticosteroids such as prednisone can be chosen in combination with immunosuppressive agents such as methotrexate. It is recommended that dermatomyositis patients with itchy skin go to the dermatology and rheumatology departments of regular hospitals for detailed consultation and active cooperation in treatment.