title: The usefulness of narrowband UVB as a monotherapy for the treatment of chronic plaque psoriasis.
abstract: OBJECTIVE
  To assess the efficacy and safety of narrowband ultraviolet B (UVB) phototherapy in dark-skinned Saudi patients with chronic plaque psoriasis.
  
  
  METHODS
  This prospective study was performed on 63 patients of chronic plaque psoriasis attending Qassim University clinics from May 2004 through June 2009. Narrowband UVB irradiation was done three times per week using the 311 +/- 2 nm wavelength.
  
  
  RESULTS
  Approximately 79 percent of patients achieved disease clearance (i.e., 90% or more reduction in PASI scores). The response to treatment was significantly better in females compared to males. No serious side effects were observed.
  
  
  CONCLUSIONS
  The narrowband UVB phototherapy was found to be safe and effective in darker-skinned Saudi patients with chronic plaque psoriasis, especially among females. A longer period of treatment (minimum of six months) is recommended for complete clearance of psoriasis.
authors.affiliation: Department of Dermatology, College of Medicine, Qassim University, Buraidah, Saudi Arabia. arobaee@gmail.com
authors.forename: Ahmad A
authors.initials: AA
authors.lastname: Al Robaee
mesh_terms: D000328:Adult; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011565:Psoriasis / Q000473:pathology / Q000628:therapy*; D012529:Saudi Arabia; D012737:Sex Factors; D012880:Skin Pigmentation; D013997:Time Factors; D014467:Ultraviolet Therapy / Q000009:adverse effects / Q000379:methods*; D055815:Young Adult