银屑病是一种常见并易复发的慢性红斑鳞屑性皮肤病,其皮疹点是在红斑上反复出现多层银白色干燥鳞屑,刮去鳞屑可见筛状出血点。其发病机理尚不清楚,但其生理病理的一个重要特点是基底层角朊细胞进入增生池的较正常明显增多,且细胞 Psoriasis is a common and easily recurring chronic erythematous scaly skin disease, the rash is repeated in the erythema multi-layered silver white dry scales, scraping off the scales visible mesh bleeding. The pathogenesis is not yet clear, but an important feature of its physiology and pathology is that the basal keratinocytes enter the proliferative pool more obviously than normal, and the cells