Hereditary Angioedema is a genetic skin disorder that causes swelling of the face, limbs, intestinal tract and airways such as windpipe (trachea) and voice box (larynx). It may cause itching and irritation in the affected area, although it leaves behind no permanent marks. Its symptoms include reddishness of affected area, intense itching and formation of oval or worm shaped skin patches.
HOW IS HEREDITARY ANGIOEDEMA DIAGNOSED?
Sickness (cold, flu etc.) ,dental procedures and surgery may trigger hereditary angioedema attacks.