[Tinea corporis from Trichophyton simii].

Tn unexplained, autochthone Trichophyton simii infection in Europe is reported. The patient was a 11-year-old caucasian girl, who had never been out of Germany, nor had contact with anyone from abroad. The girl's only pet, a guinea pig, was proven to be free of dermatophytes. Clinically the infection represented a somewhat persistent circumscribed lesion at the dorsum of one upper arm characterized mainly by small granulomata around hair follicles with only a slight erythematosquamous component.