1　临床资料　　患者男,67岁,因左脚底发疹、左腿麻木活动受限7天来诊,此前曾到其它医院内科就诊,按“神经炎”、“神经痛”治疗,效果不佳来本院。查体:左足底正中有一椭圆形红斑,约3.5cm×4.0cm,与足长轴方向一致,上见多个赤豆大小的尖头丘疹,顶部有脱皮,还见少数几个暗红色绿 1 Clinical data Patient male, 67 years old, because of left foot rash, left leg numbness limited 7 days to visit, had previously been to other hospital medical treatment, according to “neuritis”, “neuralgia” treatment, the effect is not good Our hospital. Physical examination: the middle of the left foot an oval erythema in the middle, about 3.5cm × 4.0cm, consistent with the direction of the long axis of the foot, see a number of red bean-sized pointed papules, the top of the peeling, also see a few dark red green