患者男，18岁。目躯干皮肤反复出现斑块伴发热和白细胞降低半年于1994年6月18日入院。患者于半年前偶然发现右骼部有一约核桃大小包块，皮表红，触之较硬，无明显全身症状，2月后包块自行变软，皮表变成红褐色。2个月前，左腰部皮肤出现手掌大斑块，表面发红，质地较硬，皮损逐 Male patient, 18 years old. Recurring skin patches on the trunk of the body with fever and leucocyte reduction were admitted to the hospital on June 18, 1994. Six months ago, the patient accidentally discovered that there was a walnut mass in the right iliac region. The skin was red, the contact was hard, and there was no obvious systemic symptoms. After 2 months, the mass itself became soft and the skin became red-brown. 2 months ago, large palmar plaques appeared on the left lumbar skin, redness, hard texture and skin lesions.