Definition

Noun: A type of local anesthesia that causes a loss of sensation only on a specific, localized area of the skin or a mucous membrane. This is achieved by applying an anesthetic agent directly to the body's surface.

Usage

This term is used in medical contexts to describe a numbing technique for superficial procedures. It is a precise, non-systemic method of anesthesia. - The dentist used topical anesthesia on my gums before giving the injection. - Minor skin surgeries often require only topical anesthesia.

Advanced Usage

• Mechanism: The anesthetic drug blocks nerve signals at the site of application without entering the bloodstream in significant amounts.
• Contrast with other anesthesia: Unlike general anesthesia (which affects the whole body and consciousness) or regional anesthesia (which numbs a larger area like a limb), topical anesthesia is strictly surface-level.

Variants and Related Words

• Topical anaesthesia: The British English spelling variant.
• Surface anesthesia: A less common synonym.
• Topical anesthetic (noun): The drug used to induce topical anesthesia, such as lidocaine or benzocaine.

Synonyms

• Surface anesthesia
• Localized surface numbness

Related Phrases

• Apply topical anesthesia: To administer the anesthetic.
  • The nurse will apply topical anesthesia before the suture removal.
• Under topical anesthesia: Describing a procedure performed using this method.
  • The biopsy was performed under topical anesthesia.

Noun

1. loss of sensation confined to the skin or mucous surfaces (as when benzocaine or Lidocaine is applied to the surface)