Psoriasis is a chronic disease that requires long-term control of the condition In terms of diet, one should eat less spicy and less irritating food, try to avoid causing upper respiratory tract infections, get more sunlight and keep the mouth clean. Patients with itching should do not wear chemical fiber clothing, clothing worn close to the body is best pure cotton, and usually clean with less bath soap and other items. Pay attention to moisturizing, you can choose the appropriate moisturizer according to your economic situation.