患者男,38岁。面部反复出现红斑2年余,加重1周,发热伴关节痛于2002年7月12日来本院就诊。患者于2000年3月不明原因面部起红斑,无痒痛,日晒后无明显加重,在当地诊断为多形红斑,对症治疗后可好转,红斑消退后无皮肤萎缩及瘢痕,无色素减退。有时可在同一部位再发,病情时好时坏,冬季 Male patient, 38 years old. Repeated facial erythema more than 2 years, an increase of 1 week, fever with joint pain in July 12, 2002 to our hospital. Patients in March 2000 unknown cause facial erythema, no itch pain, no significant agitation after the sun, the diagnosis of polymorphous erythema in the local symptomatic treatment can be improved after erythema subsided without skin atrophy and scarring, no pigment loss. Sometimes in the same part of the recurrence, the condition of good and bad, winter