[Disseminated inflammatory tinea: An unusual presentation.].

Tinea incognito represents a new entity caused basically by the careless application of corticosteroidal creams. We present a 71-year-old man with disseminated erythematous and squamous lesions treated with corticosteroid creams for seven months; the clinical aspect worsened and new pustular lesions appeared. The diagnosis of disseminated inflammatory tinea was confirmed by culture, with the growth of Trichophyton mentagrophytes.