Key clinical point: Compared with children without atopic dermatitis (AD), those with AD are significantly more likely to have positive patch tests (PPT) and respond to ≥1 allergen on patch testing.
Major finding: Children with vs without AD were significantly more likely to have a longer duration of dermatitis ( P < .0001), >1 PPT result ( P = .005), a greater number of PPT overall ( P = .012), and a more generalized distribution of dermatitis ( P = .001) as well as PPT to bacitracin ( P = .030), carba mix (diphenylguanidine, zinc dibutyldithiocarbamate, and zinc diethyldithiocarbamate) ( P = .025), and cocamidopropyl betaine ( P = .0007).
Study details: This retrospective case-control study included 615 children with AD and 297 children without AD.
Disclosures: This study was supported by the Dermatology Foundation, Evanston, IL. The authors declared no conflicts of interest.
Source: Johnson H et al. Prevalence of allergic contact dermatitis in children with and without atopic dermatitis: A multicenter retrospective case-control study. J Am Acad Dermatol. 2023;89(5):1007-1014 (Sep 25). doi: 10.1016/j.jaad.2023.06.048