Joynt, G.Abdullah, V.Wormald, P.2008-04-282008-04-282001Ear, Nose & Throat Journal, 2001; 80(5):321-3240145-56131942-7522http://hdl.handle.net/2440/42904Hereditary angioedema is caused by an absolute deficiency or the functional inactivity of C1 esterase inhibitor in plasma. A precise diagnosis is important because, unlike allergic forms of mucocutaneous edema, this condition does not respond to epinephrine, antihistamines, or corticosteroids. We report the case of a 24-year-old man who experienced an acute attack after he had stopped taking his prophylactic medication.enNasal SeptumTurbinatesHumansAdolescentAdultAgedMiddle AgedJournal article00200764152008042414420510.1177/0145561301080005092-s2.0-003476545744924Wormald, P. [0000-0001-7753-7277]