Synonyms
Allergic contact eczema
Definition
Allergic contact dermatitis is a skin inflammation mediated by hapten-specific T-cells that elicit a delayed-type hypersensitivity and can present as acute, subacute, or chronic contact dermatitis.
Epidemiology and Risk Factors
The prevalence of contact allergy is rising worldwide. About 15–20 % of the general population in Europe is sensitized to at least one contact allergen. Most common allergens are nickel and fragrances (Peiser et al. 2012). Workplace exposure, sex, age, and genetic predispositions (atopy) were identified as most important risk factors. Women are twice as frequently affected as men, probably due to hormonal influences. In occupational contact dermatitis, the highest incidence is found among metal workers and hairdressers (Dickel et al. 2001; Peiser et al. 2012).
Pathophysiology
Allergic contact dermatitis is mediated by a cascade of three immune processes, a sensitization, an elicitation, and a resolution phase (Fig. 1)....
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Jaeger, T., Seher, T., Schmidt-Weber, C.B., Ring, J., Gutermuth, J. (2014). Allergic Contact Dermatitis. In: Mackay, I.R., Rose, N.R., Ledford, D.K., Lockey, R.F. (eds) Encyclopedia of Medical Immunology. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-9194-1_453
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DOI: https://doi.org/10.1007/978-1-4614-9194-1_453
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