Schwensen, Jakob F2; Menné, Torkil2; Veien, Niels K2; Funding, Anne T2; Avnstorp, Christian2; Østerballe, Morten2; Andersen, Klaus E2; Paulsen, Evy2; Mørtz, Charlotte G2; Sommerlund, Mette2; Danielsen, Anne2; Andersen, Bo L2; Thormann, Jens2; Kristensen, Ove2; Kristensen, Berit2; Vissing, Susanne2; Nielsen, Niels H2; Thyssen, Jacob P2; Johansen, Jeanne D3
1 Department of Clinical Medicine, Department of Clinical Medicine, Faculty of Health and Medical Sciences, Københavns Universitet2 unknown3 Department of Clinical Medicine, Department of Clinical Medicine, Faculty of Health and Medical Sciences, Københavns Universitet
results from a multicentre study from the Danish Contact Dermatitis Group (2003–2012)
BACKGROUND: Blue-collar workers have a high risk of occupational contact dermatitis, but epidemiological studies are scarce. OBJECTIVES: To investigate allergic contact dermatitis in blue-collar workers with dermatitis registered by the Danish Contact Dermatitis Group. METHODS: A retrospective analysis of patch test data from 1471 blue-collar workers and 1471 matched controls tested between 2003 and 2012 was performed. A logistic regression was used to test for associations. RESULTS: The blue-collar workers often had occupational hand dermatitis (p < 0.001). Atopic dermatitis was less commonly observed among blue-collar workers (19.6%) than among controls (23.9%) (p = 0.005). Allergens with a statistically significant association with the occupational group of blue-collar workers were epoxy resins, methyldibromo glutaronitrile, 2-bromo-2-nitro-1,3-propanediol, potassium dichromate, and methylchloroisothiazolinone (MCI)/methylisothiazolinone (MI). The following occupations were additionally identified as risk factors for contact sensitization to MCI/MI and MI, epoxy resins, and potassium dichromate, respectively: painting, construction work, and tile setting/terrazzo work. CONCLUSION: Contact allergy is a major problem among blue-collar workers. The data indicate a healthy worker effect among blue-collar workers diagnosed with dermatitis, as blue-collar workers were diagnosed significantly less often with atopic dermatitis than were controls.
Contact Dermatitis, 2014, Vol 71, Issue 6, p. 348-55