angioedema

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Related to giant hives: angioedema

angioedema

[‚an·jē·ō·i′dē·mə]
(medicine)
The development of giant hives beneath the surface of the skin, especially around the eyes and lips; usually due to an allergic response.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.