title: Laypersons' perceptual discrimination of pigmented skin lesions.
abstract: BACKGROUND
  Most cutaneous malignant melanomas of the skin are visible and should, at least in theory, be possible to detect with the naked eye.
  
  
  OBJECTIVE
  This study was conducted to learn more about laypersons' ability to discriminate between benign pigmented lesions and malignant ones.
  
  
  METHODS
  Four groups of laypersons (n = 120) were asked to evaluate pictures of different types of pigmented skin lesions, before and after they received information about the ABCD (asymmetry, border irregularity, color variegation, and diameter greater than 6 mm) criteria, with respect to the necessity of action.
  
  
  RESULTS
  The respondents made adequate assessments of melanomas but overestimated the danger of benign pigmented skin lesions. Information about the ABCD criteria enhanced their ability to make adequate assessments.
  
  
  CONCLUSIONS
  People seem to make adequate decisions concerning how to act if they have a melanoma. On the other hand, common moles and dysplastic nevi were harder to discriminate. Providing information to the public about the features of melanomas, in accordance with the ABCD criteria, might help laypersons in their perceptual discrimination of skin lesions.
authors: Department of Cancer Prevention, Stockholm Center of Public Health, Karolinska Hospital, Sweden. richard.branstrom@smd.sll.se
authors: Richard
authors: R
authors: Bränström
authors: Mari-Anne
authors: MA
authors: Hedblad
authors: Ingvar
authors: I
authors: Krakau
authors: Henrik
authors: H
authors: Ullén
mesh_terms: D000704:Analysis of Variance; D015331:Cohort Studies; D003937:Diagnosis, Differential; D005260:Female; D006266:Health Education; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008297:Male; D008545:Melanoma / Q000175:diagnosis* / Q000473:pathology; D009508:Nevus, Pigmented / Q000175:diagnosis* / Q000473:pathology; D010358:Patient Participation; D012016:Reference Values; D012494:Sampling Studies; D016353:Self-Examination / Q000379:methods*; D012680:Sensitivity and Specificity; D012867:Skin; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000473:pathology; D014421:Turkey