Spring is the season of high incidence of skin diseases. The climate is changeable in spring, with the residual cold of winter and the dry heat of summer, and the wind is dry in spring, also mixed with various microorganisms, pollen and dust. This leads to viral skin diseases, allergic skin diseases, and solar skin diseases that are more common in spring. 1, common viral skin diseases in spring Chickenpox, rubella, hand, foot and mouth disease, infectious erythema, early childhood emergency rash and other acute infectious diseases. These diseases tend to occur in children and adolescents, but in recent years they have also been frequent in adults. Before the onset of the disease, there are often “cold” symptoms, even fever, poor diet, general discomfort, and then the skin blisters, erythema, superficial lymph nodes can be swollen, because of its strong contagious, in kindergartens, schools, faster transmission, so once found should pay attention to isolation, and give antiviral drugs and symptomatic treatment. 2, allergic skin disease Spring climate is dry, the northern wind and sand, in the spring season, pollen floating in the air, when people go out, pollen with people’s breathing into the body and make trouble. And many of us are allergic to certain substances. Such as plant pollen, is a common allergen. Usually people do not come into contact with these allergic substances, so they can have allergies after contact. The common ones are eczema, urticaria, and pityriasis simplex (peach fungus). Eczema has four major characteristics: symmetry, itchiness, rash polymorphism, and recurrent episodes. The skin can appear erythematous, papular, blistering, oozing, and flaking damage, etc. Because of itching, it often affects the patient’s sleep, study, and work, and treatment is generally given to anti-allergy drugs such as paracetamol, vitamin C, calcium gluconate, etc., and topical hydrocortisone cream is used to do symptomatic treatment. Urticaria manifests itself as recurrent wind clusters with intense itching, and when heavy, it can be accompanied by mucosal edema of the respiratory and digestive tracts, while symptoms such as suffocation, shortness of breath, nausea and vomiting occur. Mostly antihistamines are taken orally, and those who have emergencies need to be treated in hospital early. Simple sugar rash, also called white pityriasis, commonly known as peach fungus, occurs in children’s cheeks, as round patches of varying sizes, light white, with a small amount of fine scales, occasionally itchy, can fade on its own, and generally does not require treatment. In order to reduce these diseases, you should strengthen prevention, when you go out, try to wear a mask, wear long pants and long-sleeved coat, wear a sun hat, and apply some sunscreen outside. Despite some precautions, some people may still develop allergies. If a skin rash is evident or accompanied by a variety of rashes, you should seek medical attention as soon as possible to prevent the condition from worsening. The doctor will choose appropriate oral medication and appropriate topical medication according to the condition, and in severe cases, intravenous medication will be required. If allergies occur repeatedly, allergen testing should be done and desensitization treatment should be performed according to the results. 3, solar dermatosis Spring is a good time to go out and play as the sun is shining and everything is alive. In early spring, the sun often goes outdoors to enhance the tolerance of the skin to sunlight, which is good for skin beauty, but as the sun gradually becomes hot, excessive sunlight is also harmful to the skin. The sunlight that reaches the earth’s surface is composed of visible light, infrared light and ultraviolet light. Excessive exposure to ultraviolet light can cause epidermal cell metabolism disorders, skin loss of moisture, elasticity, pigmentation abnormalities, thickening of the stratum corneum, dry skin, roughness and wrinkles, which is called photoaging in medicine, is the number one enemy of premature skin aging. The most common cause of excessive sun exposure is sun spots, also known as solar dermatitis, in which redness, burning pain, flaking and brown pigmentation appear on exposed areas. Prolonged excessive sun exposure can be a direct cause of pre-cancerous skin lesions such as solar keratosis and common skin deteriorating tumors such as basal cell carcinoma and squamous cell carcinoma. In addition, sun exposure can induce or aggravate freckles, chloasma, lupus erythematosus, erythematous aspergillosis and other skin diseases. With the application of beauty products and many chemical medicines, it is still necessary to protect oneself from sunlight during long hours of outdoor work and travel. First of all, often suitable outdoor exercise to enhance skin tolerance to sunlight, avoid exposure to the sun, wear a sun hat outside, or even apply a little sunscreen such as 5% titanium dioxide ointment, 5% para-aminobenzoic acid cream, etc. Avoid contact with photosensitive substances, and if problems arise, you should go to the hospital in time to obtain the correct diagnosis and reasonable treatment. Spring skin care should be more outdoor activities, strengthen physical exercise, suitable sun exposure, drink more water, eat more fruits and vegetables, no partial food, proper bathing and cleaning of the skin, wearing loose clothing, give enough sleep, you can get a healthy skin.