The method used to test or evaluate the discharge may not be applicable to the situation.  A lack of available data on the location of storm drains and sanitary sewers, especially in older industrial facilities, may make identifying an illicit connection difficult.
Knowledge center. Angioedema, also known as Quincke's edema is the rapid edema (swelling) of the deep layers of skin-the dermis, subcutaneous tissue, mucosa and submucosal tissues.Although similar to urticaria (hives), urticaria only occurs in the upper dermis.A significant number of patients have both urticaria and angioedema.nowledge center. Angioedema, also known as Quincke's edema is the rapid edema (swelling) of the deep layers of skin-the dermis, subcutaneous tissue, mucosa and submucosal tissues.
Angioedema is a form of hives where the swelling occurs beneath the skin rather than on the surface. Angioedema, found in about 30 percent of adults with chronic urticaria, is characterized by deep swelling around the eyes and lips.hronic urticaria is a chronic case of hives that last six weeks or more, and is often caused by a trigger that is difficult or impossible to identify. People with no known cause for their chronic hives may be diagnosed with Chronic Idiopathic Urticaria (CIU).