1　临床资料　患者男 ,2 7岁。因双手皮损 1周 ,于 2 0 0 0年 10月 19日来我科就诊。患者从事挤奶工作 ,1周前发现右手掌有数个绿豆至黄豆大小紫红色丘疹 ,渐多 ,延及手指、手背 ,略感木胀 ,不痛 ,无全身不适 ,继而左手出现同样皮损。无药物过敏史 ,来诊前 2个月内无服药史。否 1 Clinical data Patient male, 27 years old. Due to one-week skin lesions, on October 19, 2000 to our department. Patients engaged in milking work, a week ago found that there are several green beans to the right palm purple size papules, and more, extending to the fingers, back of the hand, a sense of swelling, no pain, no systemic discomfort, then left the same skin lesions appear. No history of drug allergy, no medication history within 2 months before the visit. no