What is the role of pulsed-dye laser (PDL) (585 nm) in the treatment of keloids and hypertrophic scars?

Updated: May 29, 2020
  • Author: Brian Berman, MD, PhD; Chief Editor: Dirk M Elston, MD  more...
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The 585-nm PDL provides photothermolysis, resulting in microvascular thrombosis. Beginning in the 1980s, authors noted that scars became less erythematous, more pliable, and less hypertrophic after treatment with the 585-nm PDL. The findings were later confirmed using objective measurements of erythema by reflectance spectrometry readings, scar height, and pliability measurements. Because of its efficacy, safety, and relatively low cost, the PDL remains the laser treatment of choice for hypertrophic scars. Multiple publications have continued to confirm the role of the 585-nm PDL for the treatment of keloids and hypertrophic scars.

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