Dermatology contains many allergic diseases, dermatitis eczema, urticaria and other major causes, but also due to exposure to certain substances, or aggravate the disease, there are many things that should be noted in life. 1, stimulating food, alcohol, tobacco, chili, raw onion, ginger, garlic, leek, cilantro, sauerkraut, mustard, curry, strong tea, coffee, etc. 2, xenobiotics, animal protein, seafood, fish, beef and mutton, cocoon pupae, eggs, milk (especially yogurt), vegetable protein, hazelnuts, peanuts, walnuts, soybeans, and soy products, etc. 3, photosensitive plants, mustard, rape, spinach, snow lettuce, buckwheat, lettuce, acacia, horsetail, etc., food the above plants, by sunlight, may produce serious allergic reactions. 4, life to minimize the inhalation of pollen, dust, pet hair, and car exhaust, paint, and other complex allergy-prone compounds, and avoid direct contact with detergents and other allergy-prone substances. Those with facial allergies should avoid excessive exposure to ultraviolet light. 5. Do a good job of cleaning, cleaning up the corners of hygiene, reducing the adverse effects of dust and mites and other microorganisms on the human body. 6, close clothing to cotton is appropriate, and diligent change, boiling water ironing, keep the body surface clean and hygienic. 7, keep a happy mood, avoid anxiety and tension, do not stay up late. Most of the above is better to do, mainly on the diet is more difficult, for example, very few people are allergic to tomatoes, but eat eggs but no reaction, generally in the spirit of strong stimulation, should be abstained, other specific treatment of individual circumstances, after eating, three hours no obvious reaction, can be considered safe (absolutely safe, should be observed for 72 hours). You should not eat too many different kinds of food, but two or three kinds of food, to make sure that you are not allergic, and the same may be allergic, so you should keep a record of what you eat and screen for allergens yourself.