It is recommended to avoid spicy and irritating food, oily food and sweet food to avoid aggravation of symptoms. You can also take vitamin B supplements and pay attention to the moisturizing of the skin by using a mild, non-irritating moisturizing cream at least twice a day. If itching is obvious you can also take antihistamines orally at the same time, such as 2nd generation antihistamines, loratadine, cetirizine, etc. can be used.