Department of Dermatology, Kanazawa Medical University, Daigaku 1-1, Uchinada, Ishikawa, Japan.
Mycopathologia. 2012 Apr;173(4):241-4. doi: 10.1007/s11046-011-9501-z. Epub 2011 Nov 10.
We describe here two patients with tinea corporis exhibiting black dot ringworm (BDR). A cluster of black dots was observed on the extensor surfaces of the extremities of two rather hairy male patients, a 15-year-old judo practitioner and a 26-year-old combined martial arts fighter, during treatment of tinea corporis with topical antimycotics. Direct KOH examination showed that the black dots were composed of degenerated hair with numerous arthroconidia and were indistinguishable from BDR of tinea capitis. Trichophyton tonsurans was isolated from the dots of both patients. Although they were diagnosed with tinea corporis, they required 2-3 months of treatment with oral terbinafine. Dermatologists should be aware that BDR can appear on areas of the skin other than the scalp.
我们在此描述了两例体癣表现为黑点癣（BDR）的患者。在两名多毛男性患者（一名 15 岁的柔道运动员和一名 26 岁的综合武术运动员）接受体癣局部抗真菌治疗期间，我们观察到他们四肢的伸展面上出现了一簇簇黑点。直接 KOH 检查显示，这些黑点由变性毛发组成，有大量的分生孢子，与头皮黑点癣无法区分。从这两名患者的斑点中均分离出了须癣毛癣菌。尽管他们被诊断为体癣，但仍需要口服特比萘芬治疗 2-3 个月。皮肤科医生应该意识到，BDR 可能出现在头皮以外的皮肤区域。
