Disseminated superficial porokeratosis

Abstract

A 62-year-old woman with psoriasis and psoriatic arthritis presented for evaluation and treatment of a one-week history of pruritic, pink spots on her trunk and extremities. Several weeks prior, therapy with certolizumab pegol and methotrexate was started for her psoriatic arthritis. A biopsy specimen was consistent with the diagnosis of porokeratosis. Owing to the setting of immunosuppression and presence of symmetric pruritic lesions on non-sun exposed areas, the diagnosis of disseminated superficial porokeratosis was made.