title: Photopneumatic therapy for the treatment of acne.
abstract: BACKGROUND
  A wide variety of laser and light-based therapies have been utilized for acne vulgaris; however, current techniques have been limited by photosensitivity issues or inconsistent results.
  
  
  OBJECTIVE
  To determine the clinical efficacy and side-effect profile of photopneumatic therapy for the treatment of facial acne vulgaris.
  
  
  METHODS
  Twenty adults with mild to severe facial acne vulgaris received 4 successive treatments at 2-week intervals with a combined photopneumatic device (intense pulsed light [IPL]: fluences = 3.6-4.2 J/cm2; negative pressure = 3 psi). Clinical improvement was evaluated on a quartile grading scale using comparative digital photographs at baseline, and 1 month and 3 months after the final treatment. Acne lesion counts were obtained at baseline, prior to each treatment session, and at the end of the study.
  
  
  RESULTS
  Modest reduction in acne lesion counts and global clinical improvement was seen in the majority of patients. Patients with severe acne experienced the most clinical improvement. Side effects were mild and limited to transient erythema and rare purpura. Most patients experienced acne worsening early in the treatment course.
  
  
  CONCLUSIONS
  Photopneumatic therapy is a safe and effective treatment for acne vulgaris. Patients with more severe acne respond best to treatment.
authors.affiliation: Department of Dermatology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand.
authors.forename: Rungsima
authors.initials: R
authors.lastname: Wanitphakdeedecha
authors.forename: Elizabeth L
authors.initials: EL
authors.lastname: Tanzi
authors.forename: Tina S
authors.initials: TS
authors.lastname: Alster
mesh_terms: D000152:Acne Vulgaris / Q000473:pathology / Q000628:therapy*; D000293:Adolescent; D000328:Adult; D005148:Facial Dermatoses / Q000473:pathology / Q000628:therapy*; D005260:Female; D006801:Humans; D008297:Male; D010789:Phototherapy / Q000009:adverse effects / Q000379:methods; D013396:Suction; D055815:Young Adult