title: Topical calcipotriol as monotherapy and in combination with psoralen plus ultraviolet A in the treatment of vitiligo.
abstract: BACKGROUND
  Recent advances in the pathophysiology of vitiligo have demonstrated defective calcium homeostasis in depigmented skin. 1,25-Dihydroxyvitamin D3 may be involved in the regulation of melanin synthesis, and receptors for 1,25-dihydroxyvitamin D3 have been demonstrated on melanocytes.
  
  
  OBJECTIVE
  We conducted an open study to determine the efficacy and tolerability of calcipotriol cream as monotherapy and in conjunction with psoralen plus ultraviolet A (PUVA) in the treatment of vitiligo.
  
  
  METHODS
  Twenty-six patients with vitiligo affecting 5-40% of their skin were recruited. Twenty-two were treated with twice-daily topical calcipotriol monotherapy (50 microg g(-1)) and four were placed on combination treatment with twice-daily topical calcipotriol 50 microg g(-1) in conjunction with topical or oral 8-methoxypsoralen PUVA three times weekly.
  
  
  RESULTS
  Treatment was well tolerated at all sites and no adverse effects were reported. After a therapy time of 3-9 months (mean 6 months), 77% (17 of 22) of those treated with monotherapy showed 30-100% improvement, and three of the four patients on combination treatment showed good response.
  
  
  CONCLUSIONS
  Topical calcipotriol appears to be an effective and well-tolerated treatment for vitiligo and can be safely used in conjunction with PUVA, but controlled studies are necessary to exclude the possibility of spontaneous repigmentation.
authors.affiliation: Unit of Dermatology, Imperial College of Science, Technology and Medicine, Hammersmith Hospital, Du Cane Road, London W12 0HS, UK.
authors.forename: M
authors.initials: M
authors.lastname: Ameen
authors.forename: V
authors.initials: V
authors.lastname: Exarchou
authors.forename: A C
authors.initials: AC
authors.lastname: Chu
mesh_terms: D000293:Adolescent; D000328:Adult; D002117:Calcitriol / Q000031:analogs & derivatives / Q000627:therapeutic use*; D002648:Child; D002675:Child, Preschool; D003879:Dermatologic Agents / Q000627:therapeutic use*; D004359:Drug Therapy, Combination; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011701:PUVA Therapy; D016896:Treatment Outcome; D014820:Vitiligo / Q000188:drug therapy* / Q000473:pathology
chemical_list: D003879:Dermatologic Agents; C055085:calcipotriene; D002117:Calcitriol