Causes of spring skin allergies: First, the spring climate is hot and cold, warm and cold, sebaceous glands and sweat glands secretion is difficult to achieve a balance, making the skin sensitive and prone to change; second, the spring wind, sand, dust and other important factors that cause allergies; third, with the deterioration of the modern living environment and the change of diet, so that the human blood residues of some unmetabolizable toxins, such as pesticide residues, Heavy metals and so on. The immunity of the body is reduced. Allergies to a variety of allergic substances; fourth, due to the change of seasons, making the skin resistance to sunlight is weakened, so the spring also prevent excessive exposure to ultraviolet light. Fifth, the intake of photosensitive substances in the body, such as food: spinach, horsetail, lettuce, parsley, amaranth, snails, capers, leeks, etc., fruits such as mangoes, lemons, etc.. Drugs are sulfonamides, tetracycline family, etc. Chinese medicines include bone marrow, angelica dahurica and so on. These photosensitive substances are digested and absorbed into the blood to the skin, and then exposed to ultraviolet light to produce phototoxic substances causing skin inflammation at the site exposed to light. Spring skin allergy symptoms General skin allergy symptoms: dryness, itching, flaking, skin erythema,, redness, enlarged pores, acne pimples, pigmentation, aging wrinkles. In sunlight dermatitis, large red spots, blisters, itching, pain, severe headache and fever appear on the skin in the direct light area. In cosmetic dermatitis, redness, swelling, pain and blisters appear on the lips and mouth. The onset of skin allergy in spring is mostly in young and middle-aged people, followed by the elderly, and more women than men. What are the taboos for skin allergies? First of all, food taboos, most patients will blindly avoid eating when they have skin allergies, which affects the normal intake of nutrients, leading to a drop in immunity and eventually aggravating the allergy symptoms, which is undesirable. For example, patients allergic to seafood are forbidden to eat fish, shrimp, crab, etc. Patients sensitive to light should be forbidden to eat green leafy vegetables. Lettuce, amaranth, leek ~~ Secondly, in terms of skin care, many patients believe that skin problems must first be washed away, so they buy a lot of cleansers, soaps and other excessive washing, which causes the destruction of the skin barrier function, and lead to skin infections, skin damage, aggravating the disease is also undesirable. The last thing to remember is that once the skin is abnormal, do not take it upon yourself to apply some creams, especially hormonal creams. These creams are often not allopathic and have a degree of irritation and damage to the skin, making it more difficult to treat.