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Trismus is a condition in which one of the jaw muscles tightens or spasms, holding the mouth shut. A person with trismus has problems talking, eating, and brushing their teeth.

Trismus can result from injury, problems with the joint, surgery, radiation treatment, or sometimes problems with clenching or tightening the jaw.

Treatment depends on the cause of the problem but often includes oral devices and exercises.

Current as of: July 31, 2024

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

Current as of: July 31, 2024

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

The Health Encyclopedia contains general health information. Not all treatments or services described are covered benefits for Kaiser Permanente members or offered as services by Kaiser Permanente. For a list of covered benefits, please refer to your Evidence of Coverage or Summary Plan Description. For recommended treatments, please consult with your health care provider.