CASE REPORTS
JOURNAL ARTICLE
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Pulsed dye laser for the treatment of macular amyloidosis: a case report.

Macular amyloidosis causes an eruption of brown pigment in the skin when keratin is altered. The resulting hyperpigmentation, which often leads to patient distress, generally has unsatisfactory treatment options. Among the treatment modalities that have been used for amyloidosis, the pulsed dye laser (PDL) has shown success in the treatment of nodular amyloidosis, and the Q-switched Nd:YAG laser has reduced the appearance of amyloid plaques in macular amyloidosis. We investigated the effects of repeated PDL treatments in a 57-year-old man with recalcitrant macular amyloidosis. The patient was treated with 3 treatment sessions of PDL at 2-week intervals. Based on patient self-assessment and our own photographic analysis, improvement of the lesions was noted with each treatment. Macular amyloidosis can be successfully treated using the PDL, which decreases amyloid aggregation and skin hyperpigmentation. This effect from a decrease in collagen and dermatan sulfate synthesis is similar to the mechanism behind the reduction of size of hypertrophic scars using PDL.

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