title: Selective sunscreen application on nevi: frequency and determinants of a wrong sun-protective behaviour.
abstract: BACKGROUND
  Sunscreen use is generally recommended in order to prevent skin cancer but erroneous patterns of use were reported, including the selective application on melanocytic nevi.
  
  
  OBJECTIVE
  To assess prevalence and determinants of selective sunscreen application on nevi and participants' behavioural risk profile overall.
  
  
  METHODS
  A multilingual, dichotomous, funnel-designed questionnaire about sun exposure/protection habits and perceived nevus count was administered to patients attending five Dermatology Departments in three countries (Italy, Austria and France). Multivariate logistic regression models were used to determine independent predictors of each answer.
  
  
  RESULTS
  Among the 1816 subjects surveyed (59.3% females, age 14-90 (median 45) years, 44.7% Italians), 1273 (70.1%) reported intentional sun exposure and 1109/1273 (87.1%) reported sunscreen use. Among the latter, 1086 (97.9%) stated they have moles on their skin. Fifty-one/1086 (4.7%) reported selective sunscreen application on nevi. Reported information sources were: dermatologist (49.0%), personal belief (31.4%), relative/friend (7.8%), media (7.8%), paediatrician (2.0%) and general practitioner (2.0%). Increasing age (P < 0.05) and being Italian (P < 0.001) were independent predictors of selective sunscreen application on nevi. Sun-seeking behaviours were predicted by decreasing age, female sex and being Italian.
  
  
  CONCLUSIONS
  Selective sunscreen application on nevi was more common than expected. It is of concern that this was recommended mostly by physicians. There is a need to educate patients, non-expert clinicians, media and the sunscreen industry on this matter. Tan patients presenting with halo nevi should be questioned about this behaviour in order to avoid false positive diagnoses.
authors: Department of Dermatology, University of L'Aquila, L'Aquila, Italy.
authors: M
authors: M
authors: Suppa
authors: G
authors: G
authors: Argenziano
authors: E
authors: E
authors: Moscarella
authors: R
authors: R
authors: Hofmann-Wellenhof
authors: L
authors: L
authors: Thomas
authors: C
authors: C
authors: Catricalà
authors: E
authors: E
authors: Gutiérrez-González
authors: M C
authors: MC
authors: Fargnoli
authors: K
authors: K
authors: Peris
authors: I
authors: I
authors: Zalaudek
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009506:Nevus; D012309:Risk-Taking; D013473:Sunscreening Agents / Q000008:administration & dosage*; D011795:Surveys and Questionnaires; D055815:Young Adult
chemical_list: D013473:Sunscreening Agents