title: The Relationship of Psoriasis and Melanocytic Nevi.
abstract: BACKGROUND
  There is limited data about the relationship between psoriasis and melanocytic lesions and melanoma. Immunologic pathways which were implicated in psoriasis induce a reduction in the number of melanocytic nevi.
  
  
  OBJECTIVE
  To investigate the number of melanocytic nevi in psoriatic patients compared with controls and its relationship with disease severity and type of treatment.
  
  
  METHODS
  We performed a prospective study in 100 psoriatic patients and 100 controls. Clinical data were recorded for all participants.
  
  
  RESULTS
  As compared with controls, patients had overall fewer nevi congenital nevi. Among psoriatic patients, biologic agents and disease severity did not correlate with the number of nevi.
  
  
  CONCLUSIONS
  Psoriatic patients have fewer nevi than controls. Frequency of nevi in psoriatic patients is not related to treatment and disease severity.
authors.affiliation: Department of Dermatology, Bezmialem Vakif University, Istanbul, Turkey.
authors.forename: Fatma Pelin
authors.initials: FP
authors.lastname: Cengiz
authors.affiliation: Department of Dermatology, Bezmialem Vakif University, Istanbul, Turkey.
authors.forename: Nazan
authors.initials: N
authors.lastname: Emiroglu
authors.affiliation: Department of Dermatology, Bezmialem Vakif University, Istanbul, Turkey.
authors.forename: Anil Gulsel
authors.initials: AG
authors.lastname: Bahali
authors.affiliation: Department of Dermatology, Bezmialem Vakif University, Istanbul, Turkey.
authors.forename: Dilek Biyik
authors.initials: DB
authors.lastname: Ozkaya
authors.affiliation: Department of Dermatology, Bezmialem Vakif University, Istanbul, Turkey.
authors.forename: Ozlem
authors.initials: O
authors.lastname: Su
authors.affiliation: Department of Dermatology, Bezmialem Vakif University, Istanbul, Turkey.
authors.forename: Nahide
authors.initials: N
authors.lastname: Onsun
keywords: Melanoma; nevi; psoriasis