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Today (July 8) is World Allergic Disease Day. Allergic reaction refers to the abnormal immune response of the body to a substance that a normal person can tolerate, and allergic disease can affect multiple systems throughout the body. For example, in the hot summer, if you are not careful, some skin problems may "come uninvited". In particular, allergic diseases caused by sun exposure need to be strengthened.
As the temperature gradually rises, many people are suffering from ultraviolet allergies while enjoying the summer sun. Mr. Yang, who lives in Chengdu, Sichuan, recently did not take sunscreen measures when he went out to play, resulting in allergic symptoms such as redness, swelling and itching on his arms.
How do symptoms like Mr. Yang's are caused? According to doctors, there are two main types of skin diseases caused by sun exposure: one is photosensitive dermatitis caused by ultraviolet allergies. Conventional doses of ultraviolet radiation can cause symptoms such as erythema, papules, wheals, edema, etc., accompanied by varying degrees of itching. For this group of people, it is even more necessary to do a good job of ultraviolet protection. This is the case with Mr. Yang. The other type is excessive ultraviolet radiation, which directly damages the skin and causes sunburn, and the patient has different degrees of burning sensation, which is medically called solar dermatitis.
In addition, doctors also suggest that the following groups of people are more likely to have allergies after sun exposure.
Kui Yi, Executive Deputy Director of the Department of Dermatology, Zhongshan Xiamen Hospital, Fudan University: The first category is people with a history of allergic diseases in their family members; Second, people who work indoors for a long time are more likely to develop allergies than outdoor workers; The third group is people who have recently stayed up late, smoked and drank excessively.
Doctors recommend that outdoor exercise should be done appropriately in the summer to enhance the skin's tolerance to sun exposure, but also avoid prolonged exposure to the sun. You can protect yourself from the sun by wearing sunscreen, parasols, and long-sleeved shirts.
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Editor: Dong Lindan