raised, swollen, well-defined area on the skin that is the result of an insect bite or sting is called: Select one: a. a wheal.

Question

Bess [88]

4 years ago

13

raised, swollen, well-defined area on the skin that is the result of an insect bite or sting is called: Select one: a. a wheal.

b. purpura. c. urticaria. d. a pustule.

Biology

1 answer:

zimovet [89] · Answer 1 · 2021-11-12T20:54:59+03:00

Answer:

Wheal/Urticaria the

Explanation:

Wheal:*A raised,well defined swelling on the skin,often itchy,caused by an insect bite or blow from a whip*.

Wheals comes as a result of *allergic reaction*. When an insect stings on a skin,the body releases a protein called histamine.Upon release of this histamine,the tiny vessels(capillaries) leak the fluid..The fluid accumulates in the skin causing Rash/swelling. They may be rounded of flat-topped with a reddish hue.

A wheal can last for several days without fading away.

Another name for wheal is *Urticaria*

TREATMENT:

A wheal can be treated using *Antihistamines*,such as Certirizine/Fexofenadine which *helps to block the effects of histamine,reducing rash/swelling on that spot of the the allergic bite or whip,and stopping itching*.