Dermatophytosis of the External Auditory Meatus.

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Dermatophytosis of the external auditory meatus is believed to be a fairly rare disease. In the past three and a half years we have had seven cases of dermatophytosis in the external auditory meatus. All cases except one were associated with tinea of other lesions.Case 1: A 44-year-old man had tinea of the auricle, tinea pedis and tinea unguium.Case 2: A 14-year-old boy, the son of case 1 had no tinea elsewhere on his body, including the auricle. He scratched the auditory meatus with an earpick which his father had used.Case 3: A 62-year-old man had tinea of the auricle, tinea pedis and tinea unguium.Case 4: A 50-year-old man had tinea of the auricle, tinea pedis and tinea unguium.Case 5: A 36-year-old man had tinea of the auricle, tinea pedis, tinea unguium and tinea cruris.Case 6: A 30-year-old woman had tinea of the auricle.Case 7: A 68-year-old man had tinea of the auricle, tinea pedis, tinea unguium and tinea manuum.Endoscopic examination (except for cases 4 and 7) revealed dry cerumen from cartilaginous to bony region of the external auditory meatus. Direct examination using KOH method of the cerumen in all cases demonstrated numerous fungal elements. Fungal cultures identified Trichophyton rubrum except for cases 3 and 6. All cases were successfully treated with oral itraconazole or terbinafine. We suggest that tinea of the external auditory meatus is frequently associated with that of the auricle.
日本医真菌学会の論文