Dear Editor, Lichen planus pigmentosus inversus (LPPI) is a rare pigmented variant of lichen planus (LP), occurring in nonsun exposed, intertriginous areas, most commonly bilaterally, mainly in the axillae and groin of Caucasian patients. Clinically, it is characterized by hyperchromic, asymptomatic or slightly itching macules, variable in size, with well-defined borders. 1 First described by Pock et al. in 2001, it shows a worldwide distribution with a female preponderance, in the age group of 30-50 years. 2,3 The frequency is underestimated, with about 30 cases described in the medical literature. 4 We report an atypical case of LPP-inversus with unilateral distribution that occurred in an Indian woman, and we correlate line-field confocal optical coherence tomography features (LC-OCT) with histopathological findings.A 42-year-old woman, IV skin photo-type, came to our dermatology outpatient clinic with a 2-month history