Angioedema is a swelling, similar to hives, but the swelling is beneath the skin rather than on the surface. Hives are often called welts. They are a surface swelling. It is also possible to have angioedema without hives.
See also:
Angioneurotic edema; Welts
Angioedema may be caused by an allergic reaction. During the reaction, histamine and other chemicals are released into the...
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Source: ADAM Encyclopedia
Angioneurotic edema; Welts Prevention To prevent angioedema from coming back: Avoid irritating the affected area. Stay away... Read more »
Source: ADAM Encyclopedia
Angioneurotic edema; Welts Treatment Mild symptoms may not need treatment. Moderate to severe symptoms may need treatment. Breathing... Read more »
Source: ADAM Encyclopedia
Angioneurotic edema; Welts Symptoms The main symptom is sudden swelling below the skin surface. You may also develop welts or swelling... Read more »
Source: ADAM Encyclopedia
Hereditary angioedema is a rare but serious problem with the immune system that is passed down through families. It causes swelling, particularly of... Read more »