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Chronic idiopathic angioedema: a single center experience
Magen Eli1, Mishal Joseph, Boris Kuznik
1Leumit Health Services, Barzilai Medical Center, Ben Gurion University of Negev, Ashkelon, Israel; Medicine B Department, Barzilai Medical Center, Ben Gurion University of Negev, Ashkelon, Israel; Allergy and Clinical Immunology Unit, Barzilai Medical Center, Ben Gurion University of Negev, Ashkelon, Israel.
Chronic idiopathic angioedema (CIA) is a rare condition. This study found no significant clinical or laboratory differences between CIA and other chronic urticaria/angioedema forms, suggesting CIA may be a variant of chronic spontaneous urticaria.
Area of Science:
- Allergy and Immunology
- Dermatology
Background:
- Chronic idiopathic angioedema (CIA) is defined as recurrent angioedema without a clear cause.
- Understanding CIA's characteristics is crucial for diagnosis and management.
Purpose of the Study:
- To investigate the clinical and laboratory features of patients with CIA.
- To differentiate CIA from chronic urticaria (CU) and chronic urticaria with angioedema (CU+CA).
Main Methods:
- Retrospective review of 1238 patients with chronic urticaria and/or angioedema.
- Categorization into CU, CU+CA, and chronic angioedema (CA) groups.
- Identification of CIA cases within the CA group and analysis of their characteristics.
Main Results:
- Out of 1238 patients, 74 had CA, with 29 (39.2%) diagnosed with CIA.
- No significant clinical (except urticarial eruptions) or laboratory differences were found between CU, CU+CA, and CIA groups.
- Both antihistamine-responsive and unresponsive CIA groups showed no distinguishable features.
Conclusions:
- CIA, particularly the antihistamine-responsive form, may represent a rare subtype of chronic spontaneous urticaria.
- Further research is needed to understand the lack of mast cell/basophil activation signs in CIA.
