Prurigo pigmentosa: Case series and differentiation from confluent and reticulated papillomatosis

Prurigo pigmentosa (PP) is an uncommon, acquired inflammatory disorder with a predilection for young adults of Asian descent.1 This condition is manifested by highly pruritic, reticulated, and erythematous papules that resolve with hyperpigmentation.2 Multiple cases of PP have been reported since its initial description in 1971 by Nagashima et al3; however, this dermatosis is still underdiagnosed or misdiagnosed.3-6 The most significant challenge limiting the identification of PP is successful distinction from confluent and reticulated papillomatosis (CARP).