Confluent and reticulated papillomatosis, prurigo pigmentosa, and antibiotic preference

Differentiating truncal hyperpigmented lesions may present a clinical challenge—do patients have tinea versicolor, acanthosis nigricans, confluent and reticulated papillomatosis (CARP), or prurigo pigmentosa (PP)? CARP and PP are 2 intriguing dermatoses discussed in this issue of the Journal of the American Academy of Dermatology.