Shoe Contact Leucoderma: A Case Report with Serial Dermoscopic Evaluation

Abstract

Shoe contact leucoderma is an uncommon acquired depigmenting disorder caused by repeated exposure to melanocytotoxic chemicals present in footwear materials. Clinically, it may closely mimic acral vitiligo, often resulting in misdiagnosis. We report a case of bilateral, symmetrical depigmented patches over the dorsum of both feet induced by prolonged contact with a PU (polyurethane) synthetic sandal strap. Serial dermoscopic evaluation demonstrated preserved follicular structures and progressive perifollicular repigmentation following avoidance of the offending footwear, confirming the diagnosis of contact leucoderma. This case highlights the diagnostic and prognostic value of serial dermoscopy in differentiating contact leucoderma from early vitiligo.

Keywords: Shoe contact leucoderma; Chemical leukoderma; Footwear-induced depigmentation; Polyurethane sandal strap; Acral depigmentation; Serial dermoscopy; Perifollicular repigmentation; Vitiligo mimic.