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- Title
Patch Testing with Formaldehyde 2.0% in Parallel with 1.0% by the Swedish Contact Dermatitis Research Group.
- Authors
ISAKSSON, Marléne; BRÅRED -CHRISTENSSON, Johanna; ENGFELDT, Malin; LINDBERG, Magnus; MATURA, Mihaly; MÖLLER, Halvor; RYBERG, Kristina; STENBERG, Berndt; SVEDMAN, Cecilia; BRUZE, Magnus
- Abstract
In a multicentre study consecutively patch-tested dermatitis patients were tested simultaneously with 1.0% and 2.0% (w/v) formaldehyde in aqua applied with a micropipette (15 μl) to the filter paper disc in Finn Chambers (0.30 mg/cm2 and 0.60 mg/cm2, respectively). A total of 2,122 dermatitis patients were patch-tested. In all, 77 (3.6%) patients reacted positively to formaldehyde; 37 reacted only to 2.0%, 35 reacted to both concentrations and 5 patients reacted only to 1.0%. Significantly more patients were thus diagnosed with contact allergy to formaldehyde with 2.0% compared to 1.0% (p < 0.001) without causing more irritant reactions. The detected number of isolated allergic reactions to the 2 formaldehyde- releasers in the Swedish baseline series and not to formaldehyde itself raises the question whether quaternium-15 1.0% and diazolidinyl urea 2.0% should be present in the Swedish baseline series.
- Subjects
CONTACT dermatitis; SKIN tests; SKIN inflammation; FORMALDEHYDE; ALLERGENS
- Publication
Acta Dermato-Venereologica, 2014, Vol 94, Issue 4, p408
- ISSN
0001-5555
- Publication type
Article
- DOI
10.2340/00015555-1748