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Hereditary Angioedema Type I Triggered by Dental Treatment: A Case Report and Review of the Literature

Research output: Contribution to journalReview articlepeer-review

Yashoda Jagatiya, Sangeetha Yogarajah, Luis Monteiro, Barbara Carey, Rui Albuquerque

Original languageEnglish
Pages (from-to)57-62
Number of pages6
JournalDental Update
Issue number1
Published2 Jan 2022

Bibliographical note

Publisher Copyright: © 2022 George Warman Publications. All rights reserved.

King's Authors


Type 1 hereditary angioedema (HAE) is a rare genetic condition characterized by recurrent episodes of oedema caused by a deficiency of C1-esterase inhibitor (C1-INH). A 29-year-old male presented to the oral medicine department at Guy’s Hospital, London, with lip swelling following crown preparation and impressions. Haematological investigations showed reduced levels of complement C4 (0.02 g/L; reference range 0.1–0.4 g/L) and C1-INH function was <31% (reference range 85–99%). Immunology confirmed the diagnosis of type 1 HAE, with a de novo mutation. This case highlights how a detailed medical history and multidisciplinary teamwork ensure the correct diagnosis and management. CPD/Clinical Relevance: To demonstrate the various dental triggers, relevant signs and symptoms, and management options for patients diagnosed with hereditary angioedema to allow for effective decision-making in a primary dental setting.

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