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过度的暴露在日光下是引起早衰面容的主要原因。如果皮肤受到保护,临床变化会很小,没有重要的功能性变化。在长期的光照破坏下,会引起严重的结构和生理的不正常。紫外光的UVB区(280-320)及UVA区(320-400)引起的光照破坏可导致癌及严重的弹性组织变性。UVA比UVB破坏能力更强。皮肤日照病的含意包含光照老化的全部临床所见。即:变黄,变厚,皱纹、斑点、斑色、下垂、恶化前及癌的生成,色素赘生物等。大多数皮肤光照老化在第二个十年头进展较大,但只有组织学而无临床变化。经过
Excessive exposure to sunlight is the main cause of premature aging face. If the skin is protected, the clinical changes will be small with no important functional changes. Under long-term light damage, it can cause serious structural and physical abnormalities. UVA (280-320) UVA and UVA (320-400) caused by light damage can lead to cancer and severe elastic tissue degeneration. UVA is more damaging than UVB. The meaning of skin sunshine contains all the clinical findings of light aging. Namely: yellow, thickening, wrinkles, spots, spot color, sagging, before the formation of cancer and cancer, pigment vegetation and so on. Most skin photodamage progressively progressed in the second decade, but only histology without clinical changes. after