Acquired linear hyperpigmentation of the lips – a new entity?

Abstract

we observed the occurrence of an acquired and long‐lasting linear hyperpigmentation located only on the lips that does not correspond to any of previously described entity.

We conducted a multicentric retrospective study from June 2016 to April 2018 to characterize the clinical presentation and to determine if it corresponds to a new entity. All the patients presenting with acquired hyperpigmentation of the lips were included. Medical files with clinical and dermoscopic pictures, if available, were analyzed. Data collected were analyzed for gender, ethnicity, skin type, age of onset, duration, course, associated symptoms and potential triggering factors. If some information was missing, the patients were eventually contacted to complete the data.

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