4 Topic Commentaries

Lasers trigger pigmentation from past gold therapy

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  Martin J. Trotter, MD, PhD, FRCPC

  Dermatopathology

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  Department of Pathology, Vancouver Hospital and Health Sciences Centre, University of British Columbia

  Conclusions: Localized chrysiasis was induced in a patient receiving parenteral gold therapy who underwent treatment with a Q-switched ruby laser.

  Source
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  R. Rox Anderson, MD

  Dermatology

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  Massachusetts General Hospital

  The irradiance (power delivered per unit area, W/cm^{2}) of Q-switched and other submicrosecond-pulsed lasers used in dermatology is very high and may induce chrysiasis.

  Source
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  Philip R. Cohen, MD

  Dermatology

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  Department of Dermatology, University of California San Diego

  Laser-induced chrysiasis is a rarely described phenomenon in individuals who have received systemic gold and are subsequently treated with a Q-switched laser.

  Source
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  Chien-Ho Chu, MD

  Dermatology

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  Department of Dermatology, Cathay General Hospital

  These pigmented lesions corresponded exactly to areas that had previously received laser treatment.

  Source