Persistent contraction of the masseter muscles due to failure of central inhibition; often the initial manifestation of generalized tetanus. SYN: Ankylostoma (2), lock-jaw, lockjaw. [L. fr. G. trismos, a creaking, rasping]
- t. capistratus congenital adhesion of the cheeks to the gums.
- t. nascentium stiffness of the jaw muscles in neonates, usually as the beginning of tetanus neonatorum. SYN: t. neonatorum.
- t. neonatorum SYN: t. nascentium.
- t. sardonicus SYN: risus caninus.

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tris·mus 'triz-məs n spasm of the muscles of mastication resulting from any of various abnormal conditions or diseases (as tetanus)

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spasm of the jaw muscles, keeping the jaws tightly closed. This is the characteristic symptom of tetanus but it also occurs less dramatically as a sensitivity reaction to certain drugs and in disorders of the basal ganglia.

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tris·mus (trizґməs) [Gr. trismos grating, grinding] motor disturbance of the trigeminal nerve, especially spasm of the masticatory muscles, with difficulty in opening the mouth; a characteristic early symptom of tetanus. Called also lockjaw.

Medical dictionary. 2011.

, , (of the jaw)

Look at other dictionaries:

  • trismus — [ trismys ] n. m. • 1806, var. trisme; trismos 1765; gr. trismos « petit bruit aigu », de trizein « grincer » ♦ Méd. Spasmes des muscles masticateurs rendant difficile l ouverture de la bouche. « l épouvantable simagrée du trismus des tétaniques… …   Encyclopédie Universelle

  • trismus — TRÍSMUS, trismusuri, s.n. Contracţie spastică involuntară a muşchilor mandibulei, care împiedică deschiderea gurii. – Din fr. trismus. Trimis de LauraGellner, 01.07.2004. Sursa: DEX 98  trísmus s. n., pl. trísmusuri Trimis de siveco, 10.08.2004 …   Dicționar Român

  • Trismus — Trismus, also known as lockjaw, is the inability to normally open the mouth due to one of many causes.Common causes*Pericoronitis (inflammation of soft tissue around impacted third molar) is the most common cause of trismus. *Inflammation of… …   Wikipedia

  • trismus — m. sintomat. Ver trismo. Medical Dictionary. 2011. trismus Espasmo …   Diccionario médico

  • Trismus — Tris mus, n. [NL., form Gr. ? gnashing of the teeth.] (Med.) The lockjaw. [1913 Webster] …   The Collaborative International Dictionary of English

  • Trismus — (lat.), 1) Kinnbackenkrampf; T. cynĭcus, so v.w. Hundskrampf. T. dolorifĭcus, Gesichtsschmerz. T. sardonĭcus, so v.w. Sardonisches Lachen 2) u. 3); 2) so v.w. Zähneknirschen …   Pierer's Universal-Lexikon

  • Trismus — (griech.), Mundsperre, häufig Teilerscheinung des Starrkrampfes …   Meyers Großes Konversations-Lexikon

  • Trismus — (grch.), Kinnbackenkrampf …   Kleines Konversations-Lexikon

  • trismus — 1690s, Mod.L., from Gk. trismos “a scream; a grinding, rasping,” akin to trizein “to chirp, gnash.” …   Etymology dictionary

  • trismus — [triz′məs, tris′məs] n. [ModL < Gr trismos, gnashing of the teeth, a grinding, akin to trizein, to chirp, gnash < IE echoic base * (s)trei > STRIDENT] continuous contraction of the muscles of the jaw, specif. as a symptom of tetanus, or… …   English World dictionary

  • Trismus — Als Trismus (von griech. trizein, knirschen ) bezeichnet man einen tonischen Krampf der Kaumuskulatur des Unterkiefers. Als Folge lässt sich der Mund gar nicht oder nur unter starken Schmerzen leicht öffnen, was als Kieferklemme und… …   Deutsch Wikipedia

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