wheal


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wheal

 [hwēl]
a localized area of edema on the body surface, often with severe itching but usually of brief duration; it is the typical lesion of urticaria.
wheal and erythema reaction (wheal and flare reaction) the characteristic local cutaneous reaction consisting of an elevated, blanched wheal surrounded by a spreading “flare” of erythema that occurs within a few minutes at the site of a minor nonpenetrating skin injury and also in response to administration of allergen to an atopic individual; it is caused by release of histamine from mast cells.

wheal

(wēl),
A circumscribed, evanescent papule or irregular plaque of edema of the skin, appearing as an urticarial lesion, slightly reddened, often changing in size and shape and extending to adjacent areas, and usually accompanied by intense itching; produced by intradermal injection or test, or by exposure to allergenic substances in susceptible persons; also encountered in dermatitis herpetiformis (Darier sign).
Synonym(s): hives (2) , welt
[A.S. hwēle]

wheal

(wēl, hwēl)
n.
A small swelling on the skin, as from an insect bite, that usually itches or burns.

wheal

(wēl)
A circumscribed, evanescent papule or irregular plaque of edema of the skin, appearing as an urticarial lesion, slightly reddened, often changing in size and shape and extending to adjacent areas, and usually accompanied by intense itching; produced by intradermal injection or test, or by exposure to allergenic substances in those susceptible.
Synonym(s): hives (2) , welt.
[A.S. hwēle]

wheal

a mark on the skin after a skin test, an area of EDEMA.

Wheal

A smooth, slightly elevated area on the body surface, which is redder or paler than the surrounding skin.
Mentioned in: Hives

wheal

(wēl)
Circumscribed, evanescent papule or irregular plaque or dermal edema, appearing as an urticarial lesion, slightly reddened, often changing in size and shape and extending to adjacent areas, and usually accompanied by intense itching; produced by intradermal injection or test, or by exposure to allergenic substances in susceptible people.
[A.S. hwēle]
References in periodicals archive ?
The size of the wheal may increase the sensitivity of the SPT in some situations.
Prosecutor Nigel Wilkins told yesterday's hearing that Wheal had previously been jailed for four months in 2006 after pleading guilty to similar offences.
Wheal sizes were read 10 minutes later and compared with those raised by the negative control injections.
The Wheal Jane complex, together with the County Adit, are the major sources of contamination in the Carnon River.
Most notable would have to be his stunning liroconite from Wheal Gorland.
I visited the Wheal Jane site several years ago and have now been able to use the pigment from there within my latest work.
Abbott and Wheal added 72 runs for the ninth wicket before the latter edged Ed Barnard to Joe Clarke at second slip - scoring his 100th first-class run and his highest professional score of 19.
To keep economic wheal moving, the governor informed that uninterrupted electricity was being provided in Economic zones.
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The Glasgow-born paceman will join fellow fast bowler Brad Wheal of Hampshire as the Scots bid to shoot down one of their fiercest international rivals.
Bradley Wheal, the South Africa-born teenage pace bowler, is poised to make his full debut.
POLDARK BBC1, 9pm As a doctor arrives to make a study of lung diseases at Wheal Leisure, Ross sets about forming an alliance with his fellow mine-owners to build their own smelting company and break Warleggan's stranglehold on copper prices.