journal article Oct 13, 2020

Concomitant positive patch test reactions in FreeStyle‐allergic patients sensitized to isobornyl acrylate

Contact Dermatitis Vol. 84 No. 3 pp. 166-174 · Wiley
View at Publisher Save 10.1111/cod.13706
Abstract
AbstractBackgroundConcomitant positive patch test reactions in patients sensitized to isobornyl acrylate (IBOA) have rarely been documented.ObjectivesTo report concomitant sensitizations in patients with allergic contact dermatitis (ACD) from the glucose sensor FreeStyle Libre and sensitized to IBOA.MethodsIn 2019, 26 patients with suspected ACD from FreeStyle Libre were patch tested to a baseline series and to a (meth) acrylate series containing IBOA and 2‐phenoxyethyl acrylate (PEA) 0.1% pet. Diabetes devices and patch test preparations were analyzed with gas chromatography – mass spectrometry (GC‐MS) for the presence of IBOA and PEA.ResultsOf the 26 patients, 18 (69%) were sensitized to IBOA, and eight (44%) and 11 (61%) of these were co‐sensitized to sesquiterpene lactones and fragrances, respectively. Ten patients (56%) were co‐sensitized to PEA, which, contrary to IBOA, could not be detected in any device. The PEA test material was shown to be contaminated with IBOA.ConclusionsContact allergy to IBOA appears to be declining and IBOA‐sensitized patients are most often co‐sensitized to sesquiterpene lactones and fragrances. Vigilance is required when patch testing (acrylate) materials obtained from industry, as these might be contaminated and, hence, alter the results and their interpretation.
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Details
Published
Oct 13, 2020
Vol/Issue
84(3)
Pages
166-174
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Cite This Article
Ella Dendooven, Kenn Foubert, An Goossens, et al. (2020). Concomitant positive patch test reactions in FreeStyle‐allergic patients sensitized to isobornyl acrylate. Contact Dermatitis, 84(3), 166-174. https://doi.org/10.1111/cod.13706