We present a 45-year-old male Caucasian with a one-year history of perianal erythema resistant to topical corticosteroid and antifungal therapy. Physical examination of the perianal region revealed a painful, non-pruriginous erythema with erosions that involved all the circumference of the anus.

Manuel A Campos, Paulo Varela, Armando Baptista, Xiaogang Wen, Natividade Rocha