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Information about angioedema


Angioedema is the formal medical term for swelling under the skin. It usually occurs as part of an allergic reaction, but has forms that are not due to allergies.


Acute angioedema often occurs as part of an allergic reaction to various allergens or triggers. These can include certain foods, insect bites or stings, medications, and natural rubber products like latex.


Angioedema and hives often occur at the same time. However, angioedema causes large, thick welts which may not be itchy, whereas hives are smaller and usually itchy.