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‘Shiny white streaks’ in lichen amyloidosis: A clue to diagnosis

Polarising dermoscopy enables the visualisation of structures in the deeper layers of skin and causes birefringent material such as collagen to appear as bright white orthogonal, linear streaks, termed ‘chrysalis structures’ or ‘shiny white streaks’. Shiny white streaks have been reported in several lesions with altered collagen, including dermatofibroma, scars, basal cell carcinomas, Spitz naevus and melanomas. Here we report two cases of biopsy-proven lichen amyloidosis which also show shiny white streaks with polarising dermoscopy.