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After extensive diagnostic processing, asthma was dismissed, and diagnosis of selective IgA deficiency and coeliac disease with consequential iron deficiency anaemia was established. The patient was treated with parenteral iron and a gluten-free diet, which corrected her anaemia and led to the disappearance of dyspnoea. This paper aims to show the interplay between different immunological disorders and the possible causal connection between them.<\/jats:p>","DOI":"10.1136\/bcr-2021-244075","type":"journal-article","created":{"date-parts":[[2021,9,30]],"date-time":"2021-09-30T11:03:48Z","timestamp":1632999828000},"page":"e244075","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Unexpected cause of dyspnoea in a patient with allergic rhinitis"],"prefix":"10.1136","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8145-6840","authenticated-orcid":false,"given":"Vesna","family":"Vuki\u010devi\u0107 Lazarevi\u0107","sequence":"first","affiliation":[{"name":"Imperial College London Faculty of Medicine, London, UK"},{"name":"Special Hospital for Pulmonary Diseases, Zagreb, Croatia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ana Marija","family":"\u0160ola","sequence":"additional","affiliation":[{"name":"Special Hospital for Pulmonary Diseases, Zagreb, Croatia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ivan","family":"Vlahovi\u0107","sequence":"additional","affiliation":[{"name":"Southend University Hospital NHS Foundation Trust, Westcliff-on-Sea, Essex, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2021,9,30]]},"reference":[{"key":"2025082623175381000_14.9.e244075.1","doi-asserted-by":"publisher","DOI":"10.1164\/rccm.201111-2042ST"},{"key":"2025082623175381000_14.9.e244075.2","doi-asserted-by":"crossref","unstructured":"Scadding GK , Church MK , Borish L . 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