患者 ,男 ,75岁 ,因外生殖器起皮疹 ,伴瘙痒 5年 ,于 2 0 0 1年 4月来本院就诊。患者于 5年前不明原因地出现阴囊、阴茎处红斑、丘疹伴明显的瘙痒及灼热感。在其它诊所按湿疹 ,口服多种抗组胺药及外用糖皮质激素 ,疗效不显 ,病情反复 ,并发展扩大至整个阴茎、阴囊的大部、阴阜 The patient, male, 75 years old, had a rash from the genitalia and had itching for 5 years. She came to our hospital in April 2001. 5 years ago, patients with unexplained scrotum, erythema at the penis, papules with obvious itching and burning sensation. In other clinics by eczema, oral administration of a variety of antihistamines and topical glucocorticoid, curative effect is not significant, the disease repeated, and extended to the entire penis, most of the scrotum, mons pubis