1.What is the cause of the high incidence of skin diseases in autumn? There are three main reasons for the high incidence of skin diseases in autumn: ① Autumn comes, the weather turns cooler, the moisture content in the air drops, the exposed parts of the moisture is easily lost, while human body metabolism gradually slows down, the sweat and sebaceous glands secretion function decreases, so that the moisture and oil on the skin surface also follows the reduction, so that the skin becomes dry, chapped, flaky, itchy, wrinkles aggravated, especially the elderly, more likely to appear Aging pruritus, as well as the aggravation of psoriasis symptoms ② summer and autumn change in temperature faster, easy to lead to a decline in human immune function, easy to infect bacteria, fungi or viruses, suffering from shingles and other skin diseases ③ autumn ultraviolet rays are still relatively strong, especially from 11 a.m. to 3 p.m., long outdoor activities, easy to cause skin burns, aging. 2.What are the common skin diseases in autumn? Introduce the symptoms and prevention methods of several common diseases? Common skin diseases in autumn are divided into the following three categories: ① Allergic skin diseases, such as dermatitis, eczema, etc., with the main symptoms of skin erythema, pimples, itching, related to the transition between summer and autumn, the climate is humid, mosquito breeding, in life, pay attention to ventilation, keep clean, if necessary, oral antihistamines, such as breath minerals, external use of furnace glycolic lotion or glucocorticoid cream, etc. ② Infectious skin diseases, mainly including Tinea capitis, which is related to the humid climate and fungal growth, can be given topical application such as dacrynic ointment. In addition, there is also climate change and a decrease in immune function, which leads to a proliferation of herpes zoster, mainly characterized by the appearance of erythematous blisters on the skin, accompanied by discomfort such as burning and tingling of the skin, and especially reminds us that some herpes zoster only has pain in the early stage without obvious erythematous blisters. The emergence of postherpetic neuralgia; ③ psoriasis, 80% of psoriasis recurrence and aggravation in autumn and winter, the reason is not clear, upper respiratory tract infection is an important triggering factor. 3.How to take care of the skin in autumn? Autumn and winter maintenance of the skin can be carried out from moisturizing, sun protection, diet and living habits. There is a layer of protective fat film on the surface of human skin, the skin is dry in autumn, the number of baths should not be too many, the time should not be too long, the water temperature should not be too high, less alkaline cleaning products such as soap, to prevent damage to this layer of fat film, the skin’s protective function is weakened, become more dry, easy to allergic, you can use some skin care products containing protection containing oil, such as cold cream; in terms of diet, the principle of autumn skin care In terms of diet, the principle of autumn skin care is to nourish yin and clear heat, moisten the itch of dryness, you can eat some fruits and vegetables such as green vegetables, pears, apples, bananas, grapes, silver ears, etc., to supplement the vitamins and nutrients needed by the body to adapt to dry skin, in Chinese medicine, you can eat lotus seeds, yam, lentils, lilies, sage and other Chinese medicines that benefit qi and nourish yin to cook porridge; try to avoid eating fish, shrimp, crab, chili peppers and other foods that are easy to allergic or stimulating, do not drink strong tea, coffee; in terms of sun protection In terms of sun protection, the ultraviolet rays in autumn are not as strong as in summer, SPF is generally 15%, but pay attention to timely make-up. In addition, in autumn, attention should be paid to keeping warm, to speed up blood circulation can prevent dry skin; good mood, adequate sleep, regular life is also very important. 4.In the face of a wide range of cosmetics, what do I need to pay attention to when using cosmetics in autumn? In autumn, the choice of cosmetics should be adjusted to moisturizers and low-oil creams with the function of repairing damaged cells, and it is not advisable to use liquid foundations, instead, use dry and wet foundations. Of course, for dry skin and oily skin, the choice should be focused.