Source:http://linkedlifedata.com/resource/umls/id/C0041105
MSH: Spasmodic contraction of the masseter muscle resulting in forceful jaw closure. This may be seen with a variety of diseases, including TETANUS, as a complication of radiation therapy, trauma, or in association with neoplastic conditions.,NCI: Lack of ability to open the mouth fully due to decreased range of motion of the muscles of mastication. It may be a symptom of tetanus.,NCI: A disorder characterized by lack of ability to open the mouth fully due to a decrease in the range of motion of the muscles of mastication.