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2288 pages added, reviewed or updated during the last month (last updated: 19/4/2021)

2288 pages added, reviewed or updated during the last month (last updated: 19/4/2021)


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trismus

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Trismus is a motor disturbance of the trigeminal nerve.

In particular there is spasm of the masticatory muscles, with difficulty in opening the mouth - risus sardonicus or 'lockjaw' to the layperson.

Trismus is a characteristic early symptom of tetanus, but it may also occur secondary to acute infection, after an overdose of phenothiazines, and in disorders of the basal ganglia.

Last reviewed 01/2018

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