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Urticaria

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Definition: A vascular reaction of the skin characterized by erythema and wheal formation due to localized increase of vascular permeability. The causative mechanism may be allergy, infection, or stress.  a form of immediate hypersensitivity; note X ref   
Examples Angioedema 		Other names Hives; Urticarias
 
SubstanceCAS Registry & nameCategoriesSource
Papular urticaria  0   *Skin Diseases, Vesiculobullous *Urticaria.
Familial dermographism  0   *Urticaria.

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Sources: NLM Medical Subject Headings, NIH UMLS, Drugs@FDA, FDA AERS original data copyright United States Government. No endorsement implied. Last modified 6/6/2012
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