Journal
CONTACT DERMATITIS
Volume -, Issue -, Pages -Publisher
WILEY
DOI: 10.1111/cod.14454
Keywords
contact dermatitis; epidemiology; ethylenediamine dihydrochloride; sensitisation; time trend analysis
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This study analyzed the temporal trend of sensitisation to ethylenediamine dihydrochloride in northeastern Italy and investigated its associations with occupations. The results showed a decreasing trend of ethylenediamine dihydrochloride sensitisation, and significant associations were found with age and other haptens.
Background: Ethylenediamine dihydrochloride is a versatile aliphatic amine found in numerous medications and industrial compounds and is a known sensitiser. The sensitisation prevalence is affected by geographical and socio-cultural factors.Objectives: The objectives are to analyse the temporal trend of sensitisation to ethylenediamine dihydrochloride in northeastern Italy and to investigate associations with occupations.Methods: Between 1996 and 2021, 30 629 patients with suspected allergic contact dermatitis were patch tested with the Triveneto baseline series. Individual characteristics were collected through a standardised questionnaire.Results: The overall prevalence of ethylenediamine dihydrochloride sensitisation was 1.29% with percentages similar in both sexes. We observed a significant decreasing trend over time (p < 0.001), yielding a sensitisation prevalence <1% in recent years. Among departments, residence in Pordenone area was protective for sensitisation. No significant associations were observed with specific occupations. We found significant associations between ethylenediamine dihydrochloride sensitisation and being 26-35 years old (odds ratio [OR], 1.47; 95% confidence interval [CI]: 1.05-2.08), and sensitisation for many haptens, such as paraben mix (OR, 5.3; 95% CI: 3.3-8.5), epoxy resin (OR, 5.1; 95% CI: 3.0-8.7), neomycin sulphate and mercaptobenzothiazole.Conclusions: Our study showed a downward time trend of ethylenediamine dihydrochloride sensitisation in northeastern Italian population and pointed to an update of the Triveneto baseline series.
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