While the primary etiologic agent of tinea capitis in the United States has varied over the past century, the last several decades have been marked by a predominance of infection with Trichophyton tonsurans. Related anthropophilic organisms commonly isolated in other dermatophytoses are infrequently observed in tinea capitis. We report the unusual occurrence of tinea capitis in a young boy infected with Trichophyton rubrum.
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