患儿,女,10岁.因躯干及四肢近肢端出现红色斑丘疹,表面有多层银白色鳞屑3个月来诊。无家族史.体检见皮损直径在0.5cm 左右,呈钱币状,分布于躯干及四肢远心端,刮去银白色鳞屑可露出发亮的薄膜,刮去薄膜则有点状出血.心,肺、腹未见异常.血常规、血沉、抗“O”、C 反应蛋白、补体C_3、肝功均正 Children, female, aged 10. Due to the trunk and limbs near the acral red rash, the surface of multi-layer silver-white scales for 3 months consultation. No family history. Physical examination showed lesion diameter of about 0.5cm, were coin-like, distributed in the trunk and limbs telecentric end, scrape the silver-white scales can be exposed shiny film, scraping the film is a bit like bleeding. , Abdomen no abnormal blood routine, ESR, anti “O”, C-reactive protein, complement C_3, liver function are positive