https://www.ninds.nih.gov/Disorders/Patient-Caregiver-Education/Fact-Sheets/Myoclonus-Fact-Sheet

May 13, 2019 ... Myoclonic twitches or jerks usually are caused by sudden muscle ... Myoclonic jerks usually affect the whole body, with muscles on both sides ...

https://www.mayoclinic.org/diseases-conditions/myoclonus/symptoms-causes/syc-20350459

Dec 1, 2018 ... If the cause of myoclonus is unknown or can't be specifically treated, then ... to one part of the body or all over the body; Sometimes severe enough to ... Hiccups ; Sleep starts; Shakes or spasms due to anxiety or exercise ...

https://my.clevelandclinic.org/health/diseases/15301-myoclonus-muscle-twitch

When muscle twitches happen frequently or affect more than one area of the body, they may cause problems with ordinary activities, such as walking, talking,  ...

https://en.wikipedia.org/wiki/Myoclonus

Myoclonus is a brief, involuntary, irregular (lacking rhythm) twitching of a muscle or a group of muscles. It describes a medical sign and, generally, is not a diagnosis of a disease. These myoclonic twitches, jerks, or seizures are usually caused by sudden ... The sudden jerks and twitching of the body can often be so severe that it can ...

https://www.medicinenet.com/muscle_spasms/article.htm

This spasm may involve part of a muscle, the whole muscle, or even adjacent muscles. Overuse as a cause of skeletal muscle spasm is often seen in athletes ...

https://www.healthline.com/symptom/muscle-spasticity

Oct 21, 2016 ... When your muscles contract, become stiff, or spasm involuntarily, it's called spasticity. Spasticity can make it difficult to walk, move, or talk.

https://universityhealthnews.com/daily/sleep/myoclonus-innocent-twitch-serious-illness/

May 6, 2019 ... Experiencing bizarre muscle twitches as you fall asleep? Constantly bothered by annoying twitches or spasms in your muscles? You may be ...

https://www.neurosymptoms.org/functional-jerks-and-twitches/4594358010

The occasional hypnic jerk or a body shudder are normal. ... expert knowledge of the full range of jumps and jerks due to neurological disease, many of which are unusual . ... There are other causes of generalised muscle twitching but benign ...

https://www.womenshealthmag.com/health/a19950167/muscle-spasm-health-issue/

Oct 19, 2017 ... "[But] occasionally the cramping is so severe that you may have sore muscles after for a day or so." Although you can't diagnose a problem ...

https://www.michaelshouse.com/rivotril-abuse/opioid-drug-use-and-myoclonus/

Stimulus-sensitive movement – These include a twitch or spasm caused by an ... Hypnic jerk – This is experienced in the first phases of sleep as an involuntary body spasm. ... Please know that full recovery is possible and within reach. Please ...