The commonality of this type of diseases are allergic reactions triggered by different reasons, in the treatment, the following precautions need to be observed. 1. Avoid all hairy food, such as cilantro, konjac, frangipani, hot pot, beef, mutton and dog meat, barbecue, smoke and brine, seafood products, wine, etc., and eat more fresh vegetables and fruits (except mangoes and lychees). 2, actively looking for the cause of allergies, and avoid contact (in addition to diet, there are still animals such as dogs and cats, insects, etc., plants such as pollen, lacquer, ginkgo, etc., chemical categories such as soap, laundry detergent, plastic, metal, others such as cold, sunlight, etc.). 3, facial dermatitis should also avoid the use of facial cleansers and cosmetics, wash cold boiling water face, avoid sun exposure. 4, bathing should not be too diligent, to (winter 5 ~ 7 days, spring and autumn 3 ~ 4 days, summer 1 ~ 2 days wash 1 time) more suitable, and do not use hot water or soap, etc., not to scratch. 5, keep a good rest {go to bed before 11:00 p.m. is better}. 6, underwear should be loose, clean, appropriate to wear cotton fabrics. 7, if you take fire needling or other treatment should be kept dry, clean, scabs off before getting wet, can not apply any drugs topically; avoid strenuous exercise, reduce sweating; scabs can not be scratched by hand.