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It can also result from contact with allergens such as nickel, leading to dermatitis.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Case presentation<\/jats:title>\n                    <jats:p>: A 12-year-old girl presented at our Pediatric Immunology and Allergology service with recurrent labial angioedema for over a year, linked to the consumption of legumes and tomatoes, and following the use of a metal flute. Despite a nickel-positive patch test and subsequent avoidance of nickel, her symptoms persisted. Further investigations to rule out other causes of angioedema were unproductive. It was later discovered that she had been wearing a nickel-containing orthodontic device applied a year earlier. The removal of this orthodontic device led to a cessation of the angioedema episodes, highlighting nickel as the likely trigger.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>This case underscores the importance of considering prolonged nickel exposure from dental devices as a potential cause of angioedema. For patients predisposed to nickel hypersensitivity, using nickel-free alternatives such as ceramic for orthodontic appliances is crucial. Additionally, comprehensive allergen screening, including latex testing, should be conducted before the placement of such devices to prevent similar adverse reactions.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s13052-024-01833-4","type":"journal-article","created":{"date-parts":[[2025,1,5]],"date-time":"2025-01-05T12:16:10Z","timestamp":1736079370000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Nickel-induced labial angioedema in a pediatric patient with orthodontic braces: a case report"],"prefix":"10.1186","volume":"51","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8290-9020","authenticated-orcid":false,"given":"Fabrizio","family":"Leone","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alessandra","family":"Gori","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bianca Laura","family":"Cinicola","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Giorgio","family":"Colletti","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elia","family":"Pignataro","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martina","family":"Capponi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Giulia","family":"Brindisi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Caterina","family":"Anania","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anna Maria","family":"Zicari","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2025,1,5]]},"reference":[{"issue":"12","key":"1833_CR1","doi-asserted-by":"publisher","first-page":"1136","DOI":"10.1056\/NEJMra1808012","volume":"382","author":"PJ Busse","year":"2020","unstructured":"Busse PJ, Christiansen SC. 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