Introduction: Recurrence and a lack of treatment response are common in dermatophytosis. In patients with cutaneous and concurrent toenail lesions, often only the former are investigated, which may result in inappropriate treatment due to misdiagnosis.
Methods: Between January 2000 and April 2004, we prospectively studied the presence of dermatophytic fungi in lesions other than those prompting the consultation to further investigate the diagnosis.
Results: We prospectively identified 61 patients with dermatophytosis and concurrent lesions caused by the same fungus at sites distant from the primary lesion. Concurrent lesions occurred in 15.9% of culture-confirmed dermatophyte infections. Thirty-six patients (59%) consulted for skin lesions located at sites other than that of the primary lesion in the foot. The most frequently identified species was Trichophyton rubrum (50/61, 82%).
Conclusions: Localization of all the lesions, as well as isolation and identification of the causative fungus, are essential to establish the prognosis and choose the most appropriate antifungal agent, route of administration, and duration of treatment in dermatophytosis.
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