How Sunlight incidence of dermatitis?

Sunlight dermatitis occurred in short-color people in the long-term indoor outdoor work suddenly in a long time, particularly in highland areas, the water or the snowy mountains and people get sick more often by the sun, skin discoloration deep reflection and the light shielding role enhanced, not pathogenic. Cause of the disease is the role of ultraviolet spectroscopy, also known as sunburn spectrum, and its role in the skin, with the exception of direct sunlight, about half from scattering through the atmosphere, so even in the fog-degraded may also occur due to the incidence of sunlight intensity and exposure time and the scope of different size. Sunburn is a light toxicity. Now that the inflammation caused by the chemical erythema medium - prostate, histamine, serotonin, and bradykinin. The efficacy of prostaglandin material plays an important role, it may be due to UV irradiation of arachidonic acid to prostaglandin biosynthesis.