Itchy skin after sun exposure, consider solar dermatitis, may also be itself with eczema and other allergic diseases caused.
1. Solar dermatitis: individual constitution is different, for example, the sun inside the ultraviolet ray is more sensitive, long-term in the ultraviolet environment, induced the skin in the mast cell release inflammatory stimulating factor, or skin peripheral nerves caused by stimulation, produce itching.
2. Primary diseases: eczema, urticaria and other allergic diseases, the skin by ultraviolet radiation, may produce a certain amount of heat, resulting in subcutaneous capillary expansion, induced inflammation aggravation, will produce obvious itching.
It is recommended to get out of the environment of ultraviolet rays, which can help reduce itching. If the itching is further aggravated, it is recommended to go to the dermatology department of the hospital and use medication under the guidance of the doctor.