Which organisms cause tinea cruris (jock itch)?

Updated: Sep 11, 2020
  • Author: Michael Wiederkehr, MD; Chief Editor: Dirk M Elston, MD  more...
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The dermatophyte T rubrum is the most common etiologic agent for tinea cruris. [8] In a Brazilian series, T rubrum was the prevalent dermatophyte in 90% of the tinea cruris cases, followed by T tonsurans (6%) and T mentagrophytes (4%). [7] Other organisms, including E floccosum and T verrucosum, cause an identical clinical condition. T rubrum and E floccosum infections are more apt to become chronic and noninflammatory, while infection by T mentagrophytes often is associated with an acute inflammatory clinical presentation.

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