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glossary:urticaria [2012/10/16 14:40] (current)
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|+||Urticaria: Another name for the hives. Raised, itchy areas of [[skin]] that are usually a sign of an allergic reaction. Hives can be rounded or flat-topped but are always elevated above the surrounding skin. They reflect circumscribed dermal [[:edema]] (local swelling of the skin). The hives are usually well circumscribed but may be coalescent and will blanch with pressure. |
|+||The hives typically last less than 4 hours but they may stay for days or weeks. Approximately 20% of the population has experienced a bout of urticaria. |
|+||Common Misspellings: ertecaria |