1.Avoid local irritation, such as soap and hot water washing and scalding, violent scratching, etc. 2.Avoid allergenic and irritating foods, such as seafood, chili, wine, coffee, strong tea, etc. 3, try not to wear chemical fiber underwear, fur products, etc. 4.Keep the skin clean to prevent secondary infection. 5, according to medical advice, do not indiscriminately apply topical ointment. 6.Other: