[Bradykinin mediated angioedema]

L Bouillet, I Boccon-Gibod, C Massot
La Revue de Médecine Interne 2011, 32 (4): 225-31
Bradykinin angioedema (AE) are characterized by acute recurrent episodes of localized swelling. They are not associated with pruritus or erythema, and are short-lived (24 to 72 hours), disappearing without any sequelae. Corticosteroids are useless. Skin or mucous membranes (upper respiratory and intestinal) could be affected. Bradykinin AE can be secondary to: (1) AE associated with C1 inhibitor deficiency (hereditary or acquired); (2) drug-induced AE (converting enzyme inhibitors…); (3) type III AE type (oestrogen dependant) without C1 inhibitor deficiency. These type III AE can be associated with a gain of function mutation that markedly increases factor XII activity. Prognosis depends on the laryngeal attacks (resulting in 25 % of death in the absence of specific treatment). In case of severe attacks, icatibant (bradykinin receptor antagonist) or C1 inhibitor concentrate can be used. In case of frequent attacks, long-term therapy with danazol or tranexamic acid is effective.

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