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Winter 2010, Vol. 18 No. 4

Hong Kong J. Dermatol. Venereol. (2010) 18, 209-213


Case Report

Photodistributed macular amyloidosis presenting as diffuse facial pigmentation mimicking melasma: the surprising reveal

H Ranu, J Lee, P Sen

Abstract
Primary cutaneous amyloidosis is a chronic pruritic disorder with characteristic amyloid deposits in the papillary dermis. The manifestations of primary localised cutaneous amyloidosis (PLCA) are usually confined to the skin. The aetiopathogenesis of PLCA has not been clearly elucidated. We report a patient who developed PLCA after a short intense period of sun-exposure which we postulate that it may be the triggering factor in the development of macular amyloidosis.