A novel scale for measurement of acquired dermal macular hyperpigmentation (ADHM) severity

Abstract

Acquired dermal macular hyperpigmentation (ADMH) is a hypernym which includes lichen planus pigmentosus (LPP), Riehl's melanosis (RM), pigmented contact dermatitis (PCD) and erythema dyschromicum perstans (EDP). There is considerable overlap between the clinical and histopathological features of these conditions. Despite affecting a large number of patients, there is no validated quantitative scale for LPP/EDP/RM/PCD/ADMH.

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