A 15-year-old HIV-positive Ugandan boy suffered from several dry and hyperkeratotic lesions of his left hand and forearm with circinated, erythematous and scaly morphology. Microsporum gypseum could be isolated as causative agent of this ringworm. Species differentiation was confirmed and specified by sequence analysis of the internal transcribed spacer of the ribosomal DNA. Successful topical treatment of the tinea manus was started with clotrimazole-containing ointment.
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