title: Evaluation between Association of Psoriasis and Vitiligo.
abstract: BACKGROUND
  Although the occurrence of psoriasis and vitiligo is reported in a few studies, no proper relationship has been found between these two diseases.
  
  
  OBJECTIVE
  The aim of this study was to identify the frequency of the coincidence of these two diseases.
  
  
  METHODS
  A descriptive and cross-sectional study was conducted on 6,200 patients referred to dermatology clinics from September 2004 to June 2005.
  
  
  RESULTS
  Among these patients, 219 and 154 patients suffered from psoriasis (3.53%) and vitiligo (2.48%), respectively, and 12 patients (0.19%) had psoriasis and vitiligo simultaneously. The coincidence in the psoriasis group was 5.48% and in the vitiligo group was 7.79%, so the coincidence of both diseases was greater than the incidence of each alone. This association was significant (p = .004).
  
  
  CONCLUSIONS
  Coincidence of these two diseases was seen, but more studies should be done to find common genetic and immunologic factors.
authors.affiliation: Cutaneous Leishmaniasis Research Center, Ghaem Hospital, School of Medicine, Mashhad University of Medical Sciences, Mashhad, IranHealth Center, Mashhad University of Medical Sciences, Mashhad, IranHealth Sciences Research Center, Department of Biostatistics and Epidemiology, School of Health, Mashhad University of Medical Sciences Mashhad, Iran.
authors.forename: Mohammad Javad
authors.initials: MJ
authors.lastname: Yazdanpanah
authors.affiliation: Cutaneous Leishmaniasis Research Center, Ghaem Hospital, School of Medicine, Mashhad University of Medical Sciences, Mashhad, IranHealth Center, Mashhad University of Medical Sciences, Mashhad, IranHealth Sciences Research Center, Department of Biostatistics and Epidemiology, School of Health, Mashhad University of Medical Sciences Mashhad, Iran banihashemim@mums.ac.ir.
authors.forename: Mahnaz
authors.initials: M
authors.lastname: Banihashemi
authors.affiliation: Cutaneous Leishmaniasis Research Center, Ghaem Hospital, School of Medicine, Mashhad University of Medical Sciences, Mashhad, IranHealth Center, Mashhad University of Medical Sciences, Mashhad, IranHealth Sciences Research Center, Department of Biostatistics and Epidemiology, School of Health, Mashhad University of Medical Sciences Mashhad, Iran.
authors.forename: Fakhrozaman
authors.initials: F
authors.lastname: Pezeshkpoor
authors.affiliation: Cutaneous Leishmaniasis Research Center, Ghaem Hospital, School of Medicine, Mashhad University of Medical Sciences, Mashhad, IranHealth Center, Mashhad University of Medical Sciences, Mashhad, IranHealth Sciences Research Center, Department of Biostatistics and Epidemiology, School of Health, Mashhad University of Medical Sciences Mashhad, Iran.
authors.forename: Mehri
authors.initials: M
authors.lastname: Moradifar
authors.affiliation: Cutaneous Leishmaniasis Research Center, Ghaem Hospital, School of Medicine, Mashhad University of Medical Sciences, Mashhad, IranHealth Center, Mashhad University of Medical Sciences, Mashhad, IranHealth Sciences Research Center, Department of Biostatistics and Epidemiology, School of Health, Mashhad University of Medical Sciences Mashhad, Iran.
authors.forename: Shahab
authors.initials: S
authors.lastname: Feli
authors.affiliation: Cutaneous Leishmaniasis Research Center, Ghaem Hospital, School of Medicine, Mashhad University of Medical Sciences, Mashhad, IranHealth Center, Mashhad University of Medical Sciences, Mashhad, IranHealth Sciences Research Center, Department of Biostatistics and Epidemiology, School of Health, Mashhad University of Medical Sciences Mashhad, Iran.
authors.forename: Habibollah
authors.initials: H
authors.lastname: Esmaeili
mesh_terms: D000328:Adult; D015897:Comorbidity; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007492:Iran / Q000453:epidemiology; D008297:Male; D015995:Prevalence; D011565:Psoriasis / Q000453:epidemiology*; D012189:Retrospective Studies; D012307:Risk Factors; D014820:Vitiligo / Q000453:epidemiology*