title: Bath PUVA and saltwater baths followed by UV-B phototherapy as treatments for psoriasis: a randomized controlled trial.
abstract: OBJECTIVE
  To evaluate the efficacy of psoralens dissolved in a warm-water bath followed by exposure to UV-A irradiation (bath PUVA) or saltwater phototherapy (SW UV-B) compared with tap-water phototherapy (TW UV-B) or UV-B irradiation alone in psoriasis.
  
  
  METHODS
  Multisite, prospective, randomized, controlled trial with 4 parallel groups.
  
  
  METHODS
  Total of 102 dermatologic outpatient clinics.
  
  
  METHODS
  Total of 1241 patients with stable psoriasis vulgaris and a Psoriasis Area and Severity Index score of 7 or greater.
  
  
  METHODS
  Four-times-weekly UV-B, TW UV-B, SW UV-B, or bath-PUVA with baths preceding UV irradiation over a maximum of 8 weeks. The UV dose was adapted to erythemal response.
  
  
  METHODS
  Incidence of therapeutic success, defined as a reduction of the Psoriasis Area and Severity Index or affected body surface area of 50% or more.
  
  
  RESULTS
  Patients who received TW UV-B had a significantly higher incidence of therapeutic success than did patients treated with UV-B alone (60.7% vs 43.3%; P<.001; number needed to treat, 5.8; 95% confidence interval [CI], 3.9-10.9). Patients who received SW UV-B or bath PUVA had a significantly higher incidence of therapeutic success than did patients treated with TW UV-B (74.9% vs 60.7%; P<.001; number needed to treat, 7.0; 95% CI, 4.6-14.9; and 78.4% vs 60.7%; P<.001; number needed to treat, 5.7; 95% CI, 4.0-9.7, respectively). Bath PUVA was not superior to SW UV-B (78.4% vs 74.9%; P = .34).
  
  
  CONCLUSIONS
  Bath PUVA and SW UV-B are comparably effective treatments in psoriasis and superior to UV-B and TW UV-B.
authors.affiliation: Department of Dermatology, University of Ulm, Germany.
authors.forename: Ralf
authors.initials: R
authors.lastname: Schiener
authors.forename: Thomas
authors.initials: T
authors.lastname: Brockow
authors.forename: Annegret
authors.initials: A
authors.lastname: Franke
authors.forename: Bernd
authors.initials: B
authors.lastname: Salzer
authors.forename: Ralf U
authors.initials: RU
authors.lastname: Peter
authors.forename: Karl L
authors.initials: KL
authors.lastname: Resch
mesh_terms: D000287:Administration, Topical; D000328:Adult; D000368:Aged; D001494:Baths / Q000009:adverse effects / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011701:PUVA Therapy / Q000009:adverse effects; D010349:Patient Compliance; D017319:Photosensitizing Agents / Q000008:administration & dosage; D011565:Psoriasis / Q000473:pathology / Q000628:therapy*; D012720:Severity of Illness Index; D016896:Treatment Outcome; D014467:Ultraviolet Therapy / Q000009:adverse effects / Q000379:methods*
chemical_list: D017319:Photosensitizing Agents