{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T10:11:02Z","timestamp":1789726262518,"version":"4.0.1"},"reference-count":21,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2023,6,7]],"date-time":"2023-06-07T00:00:00Z","timestamp":1686096000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Contact Dermatitis"],"published-print":{"date-parts":[[2023,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>A popular antiseptic spray in Switzerland (Merfen spray), containing chlorhexidine digluconate, benzoxonium chloride and lauramine oxide, is frequently used to treat skin wounds. However, it is also increasingly reported as a major cause of adverse skin reactions, including allergic contact dermatitis (ACD).<\/jats:p><\/jats:sec><jats:sec><jats:title>Objectives<\/jats:title><jats:p>To investigate the contact allergens responsible for ACD from this antiseptic.<\/jats:p><\/jats:sec><jats:sec><jats:title>Patients\/Methods<\/jats:title><jats:p>Patch tests were performed on seven patients with a clinical history compatible with contact dermatitis from this antiseptic mixture.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>All patients presented with acute eczematous reactions following contact with either Merfen spray alone, or with multiple products including this spray. Patients showed positive reactions to this product in both patch tests and repeated open application tests (ROATs). Four patients showed dose\u2010dependent reactions to both benzoxonium chloride and lauramine oxide. One patient showed a dose\u2010dependent reaction to the former and a non\u2010dose\u2010dependent reaction to the latter. Finally, two subjects showed responses only to lauramine oxide. One patient reacted to chlorhexidine digluconate 0.5% aq. in addition to both other allergens.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Two commercially unavailable allergens, that is, benzoxonium chloride and\/or lauramine oxide were identified as major causes of ACD from Merfen antiseptic spray, whereas chlorhexidine digluconate was a contributing culprit in only one patient.<\/jats:p><\/jats:sec>","DOI":"10.1111\/cod.14359","type":"journal-article","created":{"date-parts":[[2023,6,7]],"date-time":"2023-06-07T23:40:26Z","timestamp":1686181226000},"page":"284-289","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["It is not always chlorhexidine: Identification of benzoxonium chloride and lauramine oxide as culprit allergens in a popular antiseptic in Switzerland"],"prefix":"10.1111","volume":"89","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1104-9988","authenticated-orcid":false,"given":"H\u00e9lo\u00efse","family":"W\u00fcthrich","sequence":"first","affiliation":[{"name":"Department of Dermatology and Venereology Lausanne University Hospital (CHUV)  Lausanne Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4859-4085","authenticated-orcid":false,"given":"Ahmad","family":"Yatim","sequence":"additional","affiliation":[{"name":"Department of Dermatology and Venereology Lausanne University Hospital (CHUV)  Lausanne Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5451-868X","authenticated-orcid":false,"given":"Julie","family":"Di Lucca","sequence":"additional","affiliation":[{"name":"Department of Dermatology and Venereology Lausanne University Hospital (CHUV)  Lausanne Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9857-3004","authenticated-orcid":false,"given":"Anna","family":"Walker","sequence":"additional","affiliation":[{"name":"Department of Dermatology and Venereology Lausanne University Hospital (CHUV)  Lausanne Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8474-9446","authenticated-orcid":false,"given":"Sarah","family":"Ventejou","sequence":"additional","affiliation":[{"name":"Department of Dermatology and Venereology Lausanne University Hospital (CHUV)  Lausanne Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4860-5194","authenticated-orcid":false,"given":"Marie\u2010Anne","family":"Morren","sequence":"additional","affiliation":[{"name":"Department of Dermatology and Venereology Lausanne University Hospital (CHUV)  Lausanne Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9805-3439","authenticated-orcid":false,"given":"An","family":"Goossens","sequence":"additional","affiliation":[{"name":"Department of Dermatology University Hospitals KU Leuven  Leuven Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3489-8010","authenticated-orcid":false,"given":"Ella","family":"Dendooven","sequence":"additional","affiliation":[{"name":"Department of Dermatology University Hospital Antwerp (UZA)  Antwerp Belgium"},{"name":"Research Group Immunology University of Antwerp  Antwerp Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0076-2887","authenticated-orcid":false,"given":"Olivier","family":"Aerts","sequence":"additional","affiliation":[{"name":"Department of Dermatology University Hospital Antwerp (UZA)  Antwerp Belgium"},{"name":"Research Group 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