"Wheal and flare" reaction-- A rapid response to a skin allergy test characterized by the development of a red, itching spot in the area where the allergen was injected
On intradermal injection of histamine the following three reaction occurs 1. Red spot formation - due to intense capillary dilation 2. Wheal formation -due to exudation of fluid from capillaries and vanules 3. Flare formation - due to arteriolar dilation mediated by axon reflex
Exothermic, because it releases heat as a form of energy.
A wheal, also known as hives or urticaria, is a smooth, slightly elevated area of the skin that is often accompanied by itching. It is typically caused by an allergic reaction or other irritants.
Rocket Parachute Flare
Flare
In the context of the allergic wheal and flare reaction, the flare is the redness one sees on the skin after an allergen has been injected. The wheal is the indurated (hard) bump.
Wheal or urticaria.
wheal
On intradermal injection of histamine the following three reaction occurs 1. Red spot formation - due to intense capillary dilation 2. Wheal formation -due to exudation of fluid from capillaries and vanules 3. Flare formation - due to arteriolar dilation mediated by axon reflex
Great Wheal Fortune ended in 1912.
Great Wheal Fortune was created in 1855.
The area of Great Wheal Fortune is 5,500.0 square meters.
cog
The Cornish word for Cornwall is Kernewek.
Exothermic, because it releases heat as a form of energy.
A skin elevation caused by swelling that can be itchy and usually disappears soon after erupting. Wheals are generally associated with an allergic reaction, such as to a drug or an insect bite.
Raised, often itchy spot