Local Anesthesia Board Practice Exam 2026 – Complete Preparation Guide

Urticaria, also known as hives, is a key sign of an allergic reaction to local anesthetics. This condition involves the development of raised, itchy welts on the skin, which can occur due to the release of histamines in response to an allergen. In the case of a local anesthetic, an individual may experience this reaction if they have a sensitivity or allergy to one of the components in the anesthesia solution.

Recognizing urticaria as a sign of an allergic response is crucial in a clinical setting, as it helps healthcare providers quickly identify patients who may be having a severe reaction that could escalate to anaphylaxis. This prompt recognition allows for immediate intervention and management.

Other signs, such as swelling of the tongue or increased heart rate, can also occur in allergic reactions, but urticaria is often one of the most definitive indicators, especially in the context of local anesthetic use. Pain at the injection site, while a common occurrence after administering local anesthesia, is generally not indicative of an allergic reaction but rather a normal response to the procedure itself.