Why grow on the face sunburn

summary

My wife is a real estate salesman. Sometimes she needs to take clients to look around the house. Some time ago, because of the hot weather, she was often sunburned and had a lot of sunburn on her face. She took a long time to recover. Let's take a look at why there are sunburn on the face.

Why grow on the face sunburn

First of all: the spectrum of action of this disease is mainly UVB. Normal skin can release histamine, 5-hydroxytryptamine, kinin and other inflammatory mediators from a variety of cells in the dermis by ultraviolet radiation, which can expand the blood vessels and increase the permeability in the dermis.

Secondly: after several hours to more than ten hours of sun exposure in spring and summer, there are clear red spots, bright red, blisters and erosion in severe cases; then the color of red spots turns dark, desquamation, and pigmentation or decrease.

Finally: antihistamines were used for mild cases, and low-dose glucocorticoids, aspirin or indomethacin were taken for severe cases or those with poor efficacy. For mild cases, calamine lotion should be used for topical use, while for severe cases, cold compress, glucocorticoid cream or 2.5% indomethacin solution should be used. The best way to use drugs is under the guidance of doctors, which can ensure the effect.

matters needing attention

Often participate in outdoor exercise, enhance the skin's tolerance to the sun; usually go out, especially when the sun is strong, pay attention to sunscreen, prevent sunburn or aggravate the condition of sunburn.