immunology allergic disorders
Hereditary and Acquired Angioedema
Acquired C1 inhibitor deficiency
C1 inhibitordeficiency may be acquired when Complement is consumed in neoplastic disorders (eg, B-cell lymphoma) or immune complex disorders. C1 inhibitorautoantibody is produced in monoclonal gammopathy. autoantibody is produced in autoimmune disorders (eg, Systemic Lupus Erythematosus (SLE) , Clinical presentation is usually at an older age, when patients have an associated disorder. 