求翻译：psoriasis是一种常见而原因不明的慢性炎症性皮肤病，疾病基本特征是局部皮肤细胞的异常增生导致皮肤形成银白色成层鳞屑的丘疹或斑丘疹，其中大部分银屑病(占97.98%)均为寻常型或称慢性斑块型。尽管银屑病无生命危险，但因其不良外观以及会引起不同程度的瘙痒，极大的影响了患者的生活质量。是什么意思？

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psoriasis is a common and chronic inflammatory disease of unknown origin, skin diseases, and diseases basic characteristics are a partial exception of proliferative skin cells causes the skin layer to form a silver scales of papule papule or plaque, with the majority of psoriasis (97.98 % ) are unus

But psoriasis is one kind common reason unclear chronicity inflammation skin disease, the disease basic characteristic is the partial skin cell unusual proliferation causes the skin to form silver-white color Cheng Cenglin the filings the papula or the spot papula, in which majority of psoriases (ac

Psoriasis is a common, chronic inflammatory skin disease of unknown cause, diseases of skin cells are basic features of dysplasia causes skin papule or plaque of scaly particles forming silver layered papules, most of which psoriasis (97.98%) are unusual or chronic plaque type. Although psoriasis fr

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