Autumn weather changeable, easy to cause people’s resistance to decline, thus inducing a variety of diseases, this article introduces the most common skin diseases and their prevention and treatment in autumn. 1, hand and foot chaps: various causes of hand and foot skin dryness and chaps accompanied by pain, common causes of dry friction acid and alkali organic solvents and fungal infections, etc., good in the autumn and winter. Prevention and treatment methods: prevention is the main principle of treatment of this disease. Once the formation of chaps, keep the skin clean and dry, external oil protection; such as combined with tinea pedis eczema ichthyosis should be treated at the same time; external use of 1% urea ointment. 2, itchy skin: autumn dryness is a Chinese medical term. For healthy people, to relieve autumn dryness should do two less and two more, that is, eat less ginger, chili and other spicy things; cooking methods less fried, fried, baked; appropriate to eat more oranges, grapes, kiwi and other seasonal fruits that produce lung protection; middle-aged and elderly people with itchy skin is particularly serious in autumn. Autumn and age, the human body’s sweat glands, sebaceous gland function is reduced, it is difficult to form an emulsified film with moisturizing effect on the skin, in the autumn air dry conditions, very easy to lead to circumscribed itching and more dander and other discomfort. At this time, apply some skin care products with moisturizing effect can play an improving role, men should not be taken lightly as well. 3, papular urticaria: commonly caused by fleas, mites, mosquitoes and other insect bites, or autumn climate change, temperature differences and consumption of certain foods such as fish and shrimp related. The disease is most common in children, the rash mostly occurs on the extremities and trunk extensors, for green beans to peanut-sized red windbag-like damage, often with small blisters at the top, itching, the rash 1-2 weeks to subside, leaving temporary pigmentation, but the new rash can recur. Prevention and treatment: oral antihistamines such as paracetamol, squizostine, keratan, etc., topical application of glyburide lotion, glucocorticoid cream. 4.Erythema nodosum: Erythema nodosum is a kind of inflammatory skin disease that can occur repeatedly, with complex etiology, which may be related to streptococcal infection or viral infection and other factors. It mostly occurs in young and middle-aged women, and is more likely to occur in spring and autumn. The lesions are batches of subcutaneous nodules, slightly higher than the skin surface, 1 to 50px in diameter, medium depth, with pressure pain when touched, mostly on the extensor side of the calf, sometimes the flexor side of the calf, thighs, upper limbs and even trunk can also have similar lesions. The lesions may be associated with the onset of the disease. Individual nodules can fade on their own after 2 to 3 weeks, leaving pigmentation, nodules do not break down and do not leave scar after healing. About 3-6 weeks, the disease often recurs. Prevention and treatment methods: bed rest, search for the cause and symptomatic treatment such as the application of antibiotics. Non-hormonal anti-inflammatory drugs such as anti-inflammatory pain, aspirin, etc. can also be given appropriately. For heavier cases, the hormone prednisone can be used, and the dosage will be gradually reduced after the condition is relieved. 5.Erythema multiforme: Erythema multiforme is also very common in autumn, it is an acute inflammatory skin disease caused by various reasons, the rash is polymorphic, mainly erythema and papule, the center can be purple-red, iris-like or target-shaped, sometimes the center appears blisters. It is mostly seen in young adults. Prevention and treatment: find the cause and treat symptomatically. In mild cases, antihistamines such as squizostine and keratan are given, and in severe cases, hormone therapy can be given under the guidance of a physician. If you get skin disease, you should actively search for the cause and seek medical treatment. Improve the environment, avoid adverse external stimuli, such as hot water washing, violent scratching, etc., add clothing in a timely manner, avoid excessive fatigue, maintain an optimistic and stable mood. In addition, not less than 3 times a week, each time not less than 60 minutes of aerobic exercise to enhance the body’s immune function is a good role in the skin immune performance.