What is the term for a round, localized area of edema on the skin accompanied by severe itching?

• A. Petechiae
• B. Wheal
• C. Hemiparesis
• D. Neuralgia

Answer: (B)

The term that describes a round, localized area of edema on the skin accompanied by severe itching is "wheal." Wheals are raised, itchy areas on the skin that typically appear as part of an allergic reaction, such as in cases of hives (urticaria). They are often transient and can vary in size. The presence of itching along with localized swelling is characteristic of wheals, which helps differentiate them from other skin conditions.

In contrast, petechiae are small, pinpoint, round spots that appear due to bleeding under the skin and do not involve edema or itching. Hemiparesis refers to weakness on one side of the body commonly resulting from a neurological event and does not pertain to skin conditions. Neuralgia is a term used to describe pain along a nerve path, and it is unrelated to skin swelling or itching. Thus, "wheal" is the correct term for this specific dermatological presentation.