The treatment of port-wine stains with the pulsed-dye laser at 2-week and 6-week intervals: a comparative study

The British Journal of Dermatology
N TomsonS W Lanigan

Abstract

The pulsed-dye laser (PDL) is the treatment of choice for port-wine stains (PWS). Multiple treatments are usually necessary, with standard treatment intervals ranging between 6 and 12 weeks. However, there are no studies on the effect of treating PWS at different time intervals, and the ideal time interval between treatments has not yet been agreed. It is uncertain whether treatment is more effective if administered at shorter time intervals. To establish whether the treatment of PWS with the variable pulse width 595-nm (V-beam) PDL at 2-week intervals achieves better results, with no difference in the complication rate, than treatment given at 6-week intervals. We prospectively investigated 15 patients with PWS. Each patient had the whole PWS treated at initial visit. Half of the PWS was randomly allocated to be treated at 2 weeks and the other half at 6 weeks from initial visit. Both halves of the PWS thus were treated twice in total, once at the initial visit and the second treatment either at 2 weeks or 6 weeks from initial visit. At 12 weeks an observer blinded to treatment allocation clinically evaluated the results. The outcome measure was lightening of the PWS as measured with a reflectance spectrophotometer. Complicati...Continue Reading

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