Dermatomyositis is a non-purulent inflammatory lesion involving mainly the transverse muscles with a lymphocytic infiltrate and may or may not be associated with a variety of skin lesions. It is characterized by symmetrical weakness of the limb girdle, cervical and pharyngeal muscles, and often involves multiple organs, as well as tumors and other connective tissue diseases. What are the precautions for daily life of patients with dermatomyositis? 1. Avoid sunlight as much as possible, wear a hat, gloves or long-sleeved clothes when you go out. 2, diet: do not eat or eat less celery, cauliflower, shiitake mushrooms and other foods that enhance photosensitivity or promote immune function, as well as sea fish, shrimp, crab and other foods that can easily cause allergies. 3, quit smoking and alcohol. 4.Do not use lipstick, cosmetics, hair dyes, etc. 5, avoid contact with pesticides, certain chemical decoration materials. 6, women of childbearing age should try to avoid pregnancy and abortion when the condition is not very stable, childbirth should be carried out under the guidance of a physician. 7.Ensure enough sleep, do not overwork and mental tension, do not do strenuous activities. 8, take medication on time, pay attention to the side effects of the use of hormones.