topical anesthetic
Học thuậtThân thiện
Definition
Noun: A topical anesthetic is a type of anesthetic substance applied directly to a specific surface area of the body (such as the skin or mucous membranes) to induce temporary numbness and loss of sensation in that localized area, without affecting consciousness.
Usage
A topical anesthetic is used to prevent pain during minor medical, dental, or cosmetic procedures on a specific body part. - It is typically applied as a cream, gel, spray, or liquid. - It works by blocking nerve signals in the area where it is applied.
Examples
Advanced Usage
- "Topical anesthetic" is a standard medical term. In informal contexts, people might refer to it as "numbing cream" or "surface anesthetic," but the precise term is preferred in professional settings.
- It is distinct from local anesthetics, which are usually injected, though both are used for localized numbness. A topical anesthetic is a subset of local anesthetics defined by its method of application.
Variants and Related Words
- Topical anaesthetic: The British English spelling.
- Local anesthetic: A broader category of anesthetics that numb a specific region, which includes both topical and injectable forms.
- Surface anesthetic: A less common synonym.
Synonyms
- Local anesthetic (when referring to the non-injected type)
- Numbing agent
- Anesthetic cream/gel/spray
Antonyms
- General anesthetic (causes total unconsciousness)
- Stimulant
- Analgesic (pain reliever that does not necessarily cause numbness)
Related Phrases/Compounds
- Topical analgesia: The pain relief provided by a topical anesthetic.
- Topical application: The method of putting a substance directly on a body surface.
Noun
- anesthetic that numbs a particular area of the body