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angioedema

[an-jee-oh-i-dee-muh] /ˌæn dʒi oʊ ɪˈdi mə/
noun, Pathology
1.
swelling that occurs just beneath the surface of the skin or mucous membranes.
Formerly angioneurotic edema [an-jee-oh-noo-rot-ik, ‐nyoo-, an-jee-oh-] /ˈæn dʒi oʊ nʊˈrɒt ɪk, ‐nyʊ-, ˌæn dʒi oʊ-/ (Show IPA).
Origin
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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angioedema in Medicine

angioedema an·gi·o·e·de·ma (ān'jē-ō-ĭ-dē'mə)
n.
See angioneurotic edema.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for angioedema

allergic disorder in which large, localized, painless swellings similar to hives appear under the skin. The swelling is caused by massive accumulation of fluid (edema) following exposure to an allergen (a substance to which the person has been sensitized) or, in cases with a hereditary disposition, after infection or injury. The reaction appears suddenly and persists for a few hours or days, occurring most often on the face, hands, feet, genitals, and mucous membranes.

Learn more about angioedema with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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