At present, dermatomyositis can not be completely cured, through standardized treatment can control the condition and reduce recurrence. Dermatomyositis is a group of chronic non-suppurative inflammatory diseases of the transverse muscle, characterized by symmetrical weakness of the proximal muscles of the limbs, cervical muscles, pharyngeal muscles, muscle tenderness and elevated serum myosin enzymes, which may involve other organs or tissues such as lungs, heart, joints and blood vessels. The etiology of the disease is unclear, and immune abnormalities, genetics, vascular lesions, and viral infections may be associated with the onset of the disease. The disease is chronic and cannot be cured. It can be controlled and recurrence can be reduced by standardized treatment, commonly used drugs include glucocorticoid such as prednisone and immunosuppressant such as azathioprine. Patients with poor underlying conditions (e.g., severe infections, malignant tumors, etc.), more serious conditions, and untimely or inappropriate interventions generally have a poorer prognosis, and may experience recurrent or prolonged flare-ups, and a few patients may have life-threatening problems due to rapid progression of the disease. It is recommended that patients with dermatomyositis consult a doctor in a timely manner, under the guidance of the doctor to carry out standardized treatment in a timely manner, in order to strive for a good prognosis. Do not blindly dispose of it on your own, so as to avoid improper intervention and adverse consequences.