A case of acquired angioedema.

Acquired angioedema is a rare disorder characterized by nonurticarial angioedema secondary to deficiency or altered activity of C1-esterase inhibitor protein. This article describes a patient whose recurrent angioedema was initially diagnosed as angiotensin-converting enzyme (ACE) inhibitor-induced angioedema. However, after further testing, she was diagnosed with acquired angioedema and subsequently treated with a synthetic bradykinin B2-receptor antagonist.