Scabies may be seen in psoriatic patients, although not frequent. This situation provokes many problems including the difficulty of diagnosis and uncertainty of appropriate therapy. We report a case of a young female with an existing psoriasis aggravated following scabetic infestation. At first, she took an antiscabetic treatment but the severity of psoriasis persisted. Subsequently, cyclosporine treatment was started and the psoriatic lesions improved deamatically.