Successful treatment of lichen amyloidosis using a CO2 surgical laser

Authors

  • Osamu Norisugi,

    1. Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
    Search for more papers by this author
  • Takako Yamakoshi,

    1. Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
    Search for more papers by this author
  • Tadamichi Shimizu

    Corresponding author
    1. Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
    • Address correspondence and reprint requests to: Tadamichi Shimizu, MD, PhD, Professor, Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama 930-0194, Japan, or email: shimizut@med.u-toyama.ac.jp.

    Search for more papers by this author

Abstract

Lichen amyloidosis (LA) is a type of primary localized cutaneous amyloidosis characterized by multiple pruritic discrete hyperkeratotic papules with amyloid deposition in the papillary dermis. Two patients with LA had been treated with topical corticosteroids, but with no effect on the eruptions. The present authors then started treating the affected area by superficial ablation using a CO2 surgical laser (LASER 30C, Lumenis Inc., Yokneum, Israel) at a setting of 10–15 watts with a 0.12-second pulse duration, 0.36-second rest duration, and 5-mm laser spot size. The present authors treated the patients twice a month with the CO2 laser. The papules on the legs had flattened in both patients, with a great improvement in the severe itching after 6 months in Case 1 and after 10 months in Case 2. These cases indicate that the CO2 laser led to a good response in terms of the clinical manifestations, and may be useful for the treatment of LA.

Ancillary