Pioderma gangrenoso: apresenta？？o atípica

pyoderma gangrenosum is a rare neutrophilic disease of unknown origin that is associated with systemic diseases in 50% of cases. we report a case of atypical pyoderma gangrenosum in a 39- year-old man with psoriasis associated and optimal response to cyclosporin. this case report shows the diversity of clinical manifestations of this disease, the difficult diagnosis and the therapeutic options currently available.