Most of the head psoriasis is triggered by heredity, heredity is relatively strong, at first it will appear pinhead or green bean size red dot rash, gradually expand, with silvery white phosphorous flakes, irregular shape. The patient can eat foods rich in vitamin A such as egg yolk, milk, etc.; foods rich in carotene such as carrots, sweet potatoes, tomatoes, etc.; foods rich in vitamin B2 such as peanuts, green vegetables, etc. Psoriasis should pay attention to the top of the diet, do not eat spicy and stimulating foods such as fish, shrimp, crab and other raw seafood, do not eat chili. Patients should develop good habits, go to bed early and wake up early, and not stay up late. The patient should pay attention to the skin care in daily life, keep the skin hygiene, do not scratch the diseased skin with your hands, go to the hospital for examination in time, and use some drugs under the guidance of the physician.