Myoclonus is a particular type of jerky muscle spasms with abnormal movement. In myoclonic seizures, the muscle spasms are involuntary and may have various different triggers or be regular and recurring. The cause of true myoclonus is often a brain disorder, either acute (e.g. meningitis, encephalitis) or chronic (e ...

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What is myoclonus? Myoclonus describes a symptom and not a diagnosis of a disease. It refers to sudden, involuntary jerking of a muscle or group of muscles. Myoclonic twitches or jerks usually are caused by sudden muscle contractions, called positive myoclonus, or by muscle relaxation, called negative myoclonus. ...Source: NINDS ...1

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Causes of myoclonus include:

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Causes of Myoclonus

What are the causes of myoclonus? Myoclonus may develop in response to infection, head or spinal cord injury, stroke, brain tumors, kidney or liver failure, lipid storage disease, chemical or drug poisoning, or other disorders. Prolonged oxygen deprivation to the ...2

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Causes List for Myoclonus

Possible causes of Myoclonus (or similar symptoms) may include:3

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Similar Symptoms

Is it myoclonus? There are many other types of dyskinesias or movement symptoms, such as:

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Types of myoclonus include:

  • Generalized myoclonus
  • Localized myoclonus
  • Intention myoclonus. Where voluntarily attempting to move is a trigger for the myoclonus.
  • Sleep onset myoclonus

Categories of myoclonus by the acuteness of symptoms include:

  • Acute myoclonus
  • Chronic myoclonus
  • Progressive myoclonus
  • Recurring ...
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Treatments for Myoclonus

How is myoclonus treated? Treatment of myoclonus focuses on medications that may help reduce symptoms. The drug of first choice to treat myoclonus, especially certain types of action myoclonus, is clonazepam, a type of tranquilizer. Dosages of clonazepam usually are ...4

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  1. Source: NINDS (NIH): disorders/ myoclonus/ detail_myoclonus.htm
  2. ibid.
  3. Source: Algorithmically Generated List
  4. Source: NINDS (NIH): disorders/ myoclonus/ detail_myoclonus.htm

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