(hives, eczema, neurodermatitis and various other allergic dermatitis) the commonality of this type of disease are triggered by different causes of allergic reactions, in the medical treatment, the following precautions are required to comply with. 1. Avoid all hairy food (such as cilantro, konjac, sidewalk root, peanuts, soybeans, hot pot, beef and mutton, smoke and brine, seafood products, wine, etc.) and eat more fresh vegetables and fruits (except mango, pineapple, lemon, etc.). 2.Actively look for the cause of allergy, it is recommended to do allergen testing. And avoid contact with allergens (in addition to diet, there are still animals: dogs and cats, insects, etc.; plants such as pollen, ginkgo, etc.; chemicals such as soap, metal, plastic, etc.; others such as heating, cold, sunlight, etc.) 3, facial all kinds of dermatitis should also avoid using cosmetics and skin care products, it is recommended to use: warm boiled water to wash the face (especially sensitive people choose cold boiled water to wash the face) to avoid sun exposure. 4, underwear should be loose, clean, preferably wearing cotton fabrics.