患者男，６９岁，１９９６年９月中旬因左前臂被蚊虫叮咬，自擦风油精后皮肤出现红肿、瘙痒，又外用达克宁及皮炎露，疗效不明显，且皮疹加重，并有渗出液，于我院门诊治疗，诊断为接触性皮炎，予以０．０１％雷夫奴尔湿敷及复方氯霉素软膏外擦，效果不明显，３ｄ后颈部、四肢 The patient was male, 69 years old. He was bitten by a mosquito in the left forearm in mid-September 1996. The skin appeared red and itching after self-cleansing, and the topical application of daconazole and dermatitis was not effective, and the rash was aggravated with exudate. , Outpatient treatment in our hospital, diagnosis of contact dermatitis, 0.01% Lefnurs wet dressing and compound chloramphenicol ointment external rub, the effect is not obvious, 3d after the neck, limbs