myoclonus
/ˌmaɪoʊˈkloʊnəs/
noun
- A sudden, involuntary twitching or jerking of a muscle or group of muscles.
- The doctor explained that myoclonus is often harmless but can be a symptom of a neurological disorder.
- Some people experience myoclonus just as they are falling asleep.
- Myoclonus can cause a person to suddenly jerk their arm without meaning to.