hyperpigmented macules

Acute Onset Linear Lichen Planus Pigmentosus of the Forehead: A Case Series
LPPINTRODUCTION Linear lichen planus pigmentosus (LPP) of the face is a rare acquired variant of lichen planus, with only a few cases published in the literature.1 It is an inflammatory condition with unknown etiology, characterized by blue-gray hyperpigmented macules, and tends to affect sun-exposed areas of the head and neck.1-4 The pathophysiology of linear LPP is poorly understood, though …