Oshima A, Iizuka T, Ninomiya J, Hamaguchi T, Takiuchi I
Department of Dermatology, Showa University Fujigaoka Hospital, 1-30 Fujigaoka, Aobaku, Yokohama, 227-0043, Japan.
Nihon Ishinkin Gakkai Zasshi. 1998;39(2):99-102. doi: 10.3314/jjmm.39.99.
We report two cases of dermatophytosis of the external auditory meatus. Case 1: A 44-year-old man suffered from severe itching in the right external auditory meatus for a year, and had also had tinea unguium for several years. He visited our outpatient clinic because of scaly erythema which had developed on the auricle. Otoscopic examination revealed yellow-brown dry cerumen and redness from the cartilaginous to the bony portion of the external auditory meatus. Case 2: A 14-year-old boy, the son of Case 1, suffered from severe itching in the left external auditory meatus. He scratched the auditory meatus with an earpick which his father had used. Otoscopic examination revealed a similar lesion as in the father's case, although he had no history of dermatophytosis elsewhere on his body, including the auricle. Direct examination using a KOH method of the cerumen from both cases demonstrated numerous fungal elements. Fungal culture identified Trichophyton rubrum. Both cases were successfully treated with oral itraconazole. We suggest that infection from father to son was transferred by the earpick.
我们报告两例外耳道皮肤癣菌病病例。病例1：一名44岁男性，右侧外耳道剧烈瘙痒一年，且患有甲癣数年。因耳廓出现鳞屑性红斑前来我院门诊就诊。耳镜检查发现外耳道软骨部至骨部有黄褐色干耵聍及充血。病例2：病例1的14岁儿子，左侧外耳道剧烈瘙痒。他用父亲用过的挖耳勺搔抓外耳道。耳镜检查发现与父亲病例相似的病变，尽管他身体其他部位包括耳廓无皮肤癣菌病病史。用KOH法对两例病例的耵聍进行直接检查发现大量真菌成分。真菌培养鉴定为红色毛癣菌。两例病例均口服伊曲康唑成功治愈。我们认为父子间的感染是通过挖耳勺传播的。
