Segmental prurigo pigmentosa.

Prurigo pigmentosa (PP) is an inflammatory skin disease of unknown origin. The skin lesions in PP are symmetrically distributed on the back, chest, and neck. Pruritus is a prominent feature in many cases. We report on a 13-year-old girl with lesions typical of PP in a segmental arrangement on her left chest. A segmental distribution of PP has not been previously reported.