What is referred to as a wheal?

A wheal is characterized as an itchy, swollen lesion that often appears as a raised area on the skin. It is typically a result of an allergic reaction, insect bite, or other irritants that cause localized swelling due to inflammation. This swelling is caused by an accumulation of fluid in the dermal layer of the skin, which leads to the distinctive appearance of wheals. They can vary in size and shape and are usually transient, with the swelling subsiding over a short period.

The other choices do not accurately define a wheal. A large blister refers to a fluid-filled sac on the skin, which is distinctly different from the raised, itchy nature of a wheal. A type of skin rash is a broader term that encompasses various skin conditions but does not specifically identify the characteristics of a wheal. A burning skin condition describes sensations that can arise from irritation or inflammation but does not coincide with the specific characteristics of wheals, which are more about swelling and itchiness rather than burning sensations.