The typical lesion of dermatomyositis, an edematous purplish-red patch on both upper eyelids, spreads to the periorbital area and gradually expands to the V-zone of the face, neck and upper chest. A purplish papule on the extremities of the elbows and knees, especially on the extensor side of the metacarpophalangeal and interphalangeal joints, with dilated capillaries and hypopigmentation, covered with fine scales, is called Gottron’s (Gordon) sign or Grottron’s papule. It is associated with a variety of infections. So, what are the preventive methods for edematous purplish spots on both upper eyelids? The following is a brief description: 1. Avoid direct sunlight (mainly ultraviolet light) as much as possible, and wear a hat, gloves, long-sleeved clothes or an umbrella when you go out. 2.Do not eat seafood (fish, shrimp, crab) and other foods that may cause allergy as much as possible. 3. Avoid eating spicy and stimulating foods (onion, ginger, garlic, etc.). 4, eat less greasy food; do not eat full. 5.No smoking and drinking alcohol. 6.Do not use cosmetics, hair dyes. 7, avoid contact with pesticides and certain decorative materials. 8, women of childbearing age in the condition is not very stable should be mindful of trying to avoid pregnancy and abortion, childbirth should be under the guidance of a physician. 9, to ensure adequate sleep, work and rest. Keep your mood relaxed and exercise moderately. 10, outside the hospital should be regular follow-up review. Wait, very helpful for the recovery and prevention of recurrence. Aggravate, limb deformity, prevent the emergence of serious symptoms of heart failure or respiratory failure, so that the disease eventually get relief.