Rashes in children in spring may be caused by solar dermatitis, urticaria, hand-foot-mouth disease and other diseases. 1. solar dermatitis: this disease occurs mainly because the skin receives more than the tolerated amount of ultraviolet radiation, due to the increase in the intensity of ultraviolet rays in the spring, the exposure time is prolonged, so it is easy to occur solar dermatitis. The main manifestation is a bright red rash on the skin in the sun, accompanied by a burning or stinging sensation. 2. Urticaria: the cause of the disease is more complex, including friction, pressure, sun exposure and other physical factors, as well as mango, eggs, fish and other foods, as well as emotional fluctuations, mental tension and other endocrine factors. Typical symptoms are self-conscious itchy skin, and localized reddish masses will appear, so the child’s rash in the spring may be caused by hives. 3. Hand, foot and mouth disease: the main cause of this disease is coxsackie virus infection, which can be transmitted through the respiratory tract or digestive tract. When the child is in the rash period, red papules and herpes appear on the hands, feet and buttocks, and are accompanied by symptoms such as fatigue, fever and loss of appetite. There are more reasons for children to have rashes in the spring, and you need to visit the hospital in time to find out the exact cause.