Dermatomyositis is not considered cured if it does not recur for several years, dermatomyositis is currently incurable, and no recurrence means better control. Dermatomyositis is a non-purulent inflammatory disease, mainly in the skin and muscles, skin symptoms are most typical of the upper eyelids purple congestive rash, limbs proximal limb muscle weakness, in general, most dermatomyositis can be controlled, relatively speaking, the prognosis is better, and some patients can be treated for a long period of time without recurrence. But dermatomyositis in general is considered an immune system disease, there is no specific drug, only through the conventional treatment to relieve the symptoms, the current treatment is mostly used in drug therapy, glucocorticosteroids such as prednisone and immunosuppressive agents such as cyclophosphamide, which can improve the prognosis of dermatomyositis in order to prevent the cause of other serious complications. It is recommended that patients with dermatomyositis go to the hospital in a timely manner and follow the doctor’s instructions for standardized treatment to avoid delaying the condition.