Preferred Label : Hereditary Angioedema Types I and II;
NCIt definition : Autosomal dominant inherited disorders characterized by abnormalities of C1 inhibitor.
Patients present with swelling of the skin, subcutaneous tissues, and mucosa sites.
In type I hereditary angioedema, the plasma levels of C1 inhibitor are decreased.
In type II hereditary angioedema, the C1 inhibitor is dysfunctional and its plasma
levels may be normal or elevated.;