Medical Definition of Trismus
Trismus: Inability to open the mouth fully. This may be due to spasm of the jaw muscles and be a symptom of tetanus (lockjaw). Or it may be due to abnormally short jaw muscles, as in the trismus-pseudocamptodactyly syndrome.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 6/9/2016
WebMD Oral Health
Get tips for a healthy mouth.