Britannica AI Icon

topical anesthesia

drug
Also known as: surface anesthesia

Quick Summary

Topical anesthesia is a type of local anesthetic that causes a temporary loss of sensation in a specific area of the body by blocking nerve conduction. Unlike general anesthesia, it does not involve a loss of consciousness. Topical anesthetics are applied directly to mucous membranes, such as those in the nose, throat, or eye, or to the skin.12

This method is useful for minor procedures, like dental work or relieving a sore throat, and can be administered through lozenges, sprays, or creams. Common synthetic local anesthetics include procaine and lidocaine, with their names typically ending in "-caine". The effectiveness of topical anesthesia relies on the drug's ability to penetrate the nerve fibers and block the transmission of pain signals.12

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.