Risus Sardonicus

Risus sardonicus is a type of facial muscle spasm where a person appears to be smiling or grinning. It is an uncommon symptom that may be caused by a few disorders: tetanuslockjawĒ), tetany (hypocalcemia causing muscle spasms), Wilsonís disease ...

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Causes

Causes of risus sardonicus (abnormal facial muscle spasm causing grinning or smiling) include:

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Related Symptom Topics

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Related Disease and Condition Topics

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