Prurigo pigmentosa: report of two cases in the United States and review of the literature.

Prurigo pigmentosa is a rare inflammatory skin disease of unknown etiology presenting as a pruritic truncal eruption of reticulated and symmetric macules and papules with the predilection for young Japanese females. Although cases of PP are increasingly reported in the non-Japanese literature, dermatologists may be unfamiliar with this entity. Here we report a Caucasian American female and a Chinese American female with PP and a discussion of the literature. The treatments of choice for prurigo pigmentosa are tetracyclines such as doxycycline and minocycline, as well as dapsone. The prognosis is excellent.