患者女,67岁。因外阴部丘疹、水疱5年,瘙痒1个月余,于2014年8月18日来中国人民解放军空军总医院皮肤科就诊。患者5年前无明显诱因外阴部出现粟粒大肤色丘疹及水疱,无明显自觉症状,未予治疗,皮损逐渐增多增大,累及双侧大阴唇内外侧,行走摩擦时感觉不适。1个月前患者皮损处出现瘙痒,自行外用药物(不详)无效。搔抓后部分皮损糜烂,有透明黏稠 Female patient, 67 years old. Due to genital papules, blisters 5 years, itching more than 1 month, on August 18, 2014 to the Chinese PLA Air Force General Hospital Dermatology clinic. 5 years ago, there was no obvious incentive for patients with large miliary papules and blisters in the vulva, no obvious symptoms, no treatment, gradually increased skin lesions increased, both inside and outside the bilateral labia majora touching friction feeling uncomfortable. Patients with pruritus lesions at 1 month ago, their own topical drugs (unknown) is invalid. Scratching part of the skin erosion, transparent and sticky