title: Narrowband ultraviolet B phototherapy is a suitable treatment option for solar urticaria.
abstract: BACKGROUND
  Narrowband (NB) ultraviolet (UV) B lamps are widely used for treatment and prophylaxis of several skin diseases.
  
  
  OBJECTIVE
  We sought to assess the efficacy of two protocols of NB-UVB therapy for the prophylaxis of UVB-sensitive and UVB-insensitive solar urticaria (SU).
  
  
  METHODS
  Subjects affected by SU underwent phototesting for assessment of the minimal erythemal dose and minimal urticarial dose. Patients without urticarial response to UVB underwent a single daily exposure every other day for 4 weeks (group A). Patients with a urticarial test response to broadband UVB or NB-UVB (group B) received 3 daily exposures (on working days) for the first week. Afterward, they were treated as the patients of group A for 3 weeks. Follow-up visits took place after 1 and 3 months.
  
  
  RESULTS
  A total of 39 patients completed the study. In groups A (29 patients) and B (10 patients), the median total number of exposures was 12 (interquartile range [IQR]: 12; 15) and 25.5 (IQR 24; 27), respectively. The median total NB-UVB dose was 10.3 J/cm(2) (IQR 9.9; 11) for group A and 9.1 J/cm(2) (IQR 8.5; 10.6) for group B. At follow-up visits, patients reported good tolerance to the sun.
  
  
  CONCLUSIONS
  A direct comparison of NB-UVB with UVA or psoralen plus UVA for the photoprophylaxis of SU is still lacking.
  
  
  CONCLUSIONS
  NB-UVB phototherapy was well-tolerated and effectively prevented SU relapses.
authors.affiliation: Department of Dermatology, Spedali Civili Hospital, Brescia, Italy. fototerapia@spedalicivili.brescia.it
authors.forename: PierGiacomo
authors.initials: P
authors.lastname: Calzavara-Pinton
authors.forename: Cristina
authors.initials: C
authors.lastname: Zane
authors.forename: MariaTeresa
authors.initials: M
authors.lastname: Rossi
authors.forename: Raffaella
authors.initials: R
authors.lastname: Sala
authors.forename: Marina
authors.initials: M
authors.lastname: Venturini
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010787:Photosensitivity Disorders / Q000532:radiotherapy*; D011879:Radiotherapy Dosage; D014467:Ultraviolet Therapy / Q000379:methods; D014581:Urticaria / Q000209:etiology / Q000532:radiotherapy*; D055815:Young Adult