title: Efficacy of ipl in treatment of acne vulgaris : comparison of single- and burst-pulse mode in ipl.
abstract: BACKGROUND
  Intense pulsed light (IPL) has been used for the treatment of facial acne. Modifications of various parameters allow flexibility in treatment, which include energy fluence, pulse duration, and pulse delay. We compared the efficacy of burst-pulse (multiple pulse) mode with single-pulse mode in treatment of acne.
  
  
  OBJECTIVE
  This study was designed to evaluate the efficacy of the IPL in treatment of facial acne and to compare burst-pulse and single-pulse mode in treatment of acne.
  
  
  METHODS
  Ten patients with facial acne were subjected to monotherapy with IPL. Baseline grading of acne was done with Michelsons acne severity index; however, right and left side of face were scored separately and a total score was also taken. IPL was administered once weekly for four sessions. Right side was subjected to IPL with burst-pulse mode, and left side was subjected to single-pulse mode. Severity score assessed after the end of treatment. Clinical photographs were also obtained for evaluation.
  
  
  RESULTS
  All patients revealed a reduction in number of acne for both single- and burst-pulse mode treated sides. The mean total score was 49.4 at baseline and showed 49.19% reduction after four sessions of IPL. Burst-pulse mode treated side showed a better control than that of single-pulse mode.
  
  
  CONCLUSIONS
  IPL as a monotherapy showed beneficial effect in treatment of facial acne. Burst-pulse mode was better than the single-pulse mode in clearing acne.
authors: Department of Dermatology, PSG Hospitals, Coimbatore, India.
authors: M
authors: M
authors: Kumaresan
authors: C R
authors: CR
authors: Srinivas