Ide cutaneus reaction in patient with Tinea cruris incognito due to Trichophyton rubrum

A 70- year-old-Caucasian male was admitted to our Department of Dermatology because since about two years, erithematosus macules-papules and pustoles itching appared to neck, referable to id or dermatophytid reaction. A year before the patient performed a skin biopsy on a lesion of the neck to hospital Department of Surgery with resulted inexact and despise diagnosis. Tinea cruris incognito was present in tratment with corticosteroid topic for two years. Fungal culture showed colonies of Trichophyton rubrum.A topic tratment with terbinafine and sertaconazole was given only on the inguinal region.At control, three weeks later, all lesions had cleared up.