Lichen planus pigmentosus and lichen planopilaris.

Lichen planus is an inflammatory skin conditionwith characteristic histopathological findings thathas many clinical variants. Recently, there have been25 cases reported in the literature of lichen planuspigmentosus (LPPi) that preceded the developmentof frontal fibrosing alopecia (FFA), which is a variantof lichen planopilaris (LPP). We review the literatureregarding LPPi, LPP, and FFA and present a case of a40-year-old African American woman with LPPi andLPP.