1. Hereditary angioedema  (Trust Mark: Doctor-Reviewed)
Hereditary angioedema is a rare but serious problem with the immune system that is passed down through families. It causes swelling, particularly of the face and airways, and abdominal cramping. See also: Angioedema • Reviewer: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and Stuart I. Henochowicz, MD, FACP, Associate Clinical Professor of Medicine, Division of Allergy, Immunology, and Rheumatology, Georgetown University Medical School. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

2. Hereditary Angioneurotic Edema  (Trust Mark: Doctor-Reviewed)
Hereditary angioneurotic edema (HANE) is a nonsex linked (autosomal) dominant disease that results from mutations in a gene responsible for producing one of the proteins responsible for human immunity. This disease is also known as hereditary angioe...• Author: Paul A. Johnson