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Diseases » Myoclonus » Summary
 

What is Myoclonus?

What is Myoclonus?

Everyone has muscle twitches, such as hiccups or sleep starts, but clinical myoclonus is more severe. ...more »

  • Myoclonus: Sudden involuntary muscle twitching or movement.
  • Myoclonus: Involuntary shock-like contractions, irregular in rhythm and amplitude, followed by relaxation, of a muscle or a group of muscles. This condition may be a feature of some CENTRAL NERVOUS SYSTEMS DISEASES (e.g., EPILEPSY, MYOCLONIC). Nocturnal myoclonus may represent a normal physiologic event or occur as the principal feature of the NOCTURNAL MYOCLONUS SYNDROME. (From Adams et al., Principles of Neurology, 6th ed, pp102-3).
    Source - Diseases Database
  • Myoclonus: a clonic spasm of a muscle or muscle group.
    Source - WordNet 2.1

Myoclonus is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Myoclonus, or a subtype of Myoclonus, affects less than 200,000 people in the US population.
Source - National Institutes of Health (NIH)

Myoclonus: Introduction

Types of Myoclonus:

Types of Myoclonus:

  • Positive myoclonus - sudden muscle contractions
  • Negative myoclonus - sudden muscle relaxations
  • Posthypoxic myoclonus - from hypoxia
  • Action myoclonus
  • Cortical reflex myoclonus - probably a type of epilepsy
  • Essential myoclonus
  • Palatal myoclonus - contractions of the mouth's palate, tongue and related areas.
  • Progressive myoclonus epilepsy (PME) - myoclonus, epileptic seizures, and other serious symptoms walking difficulty, speaking difficulty. PME has various subtypes:
    • Lafora body disease - genetic autosomal recessive, causes myoclonus, epileptic seizures, and dementia
    • PME cerebral storage diseases - myoclonus, visual problems, dementia, and dystonia
    • PME system degenerations - action myoclonus, seizures, and problems with balance and walking
  • Reticular reflex myoclonus
  • Stimulus-sensitive myoclonus - triggered by noise, movement, light, and surprise.
  • Sleep myoclonus - occurs during start of sleep
  • more types...»

Broader types of Myoclonus:

How serious is Myoclonus?

Complications of Myoclonus: see complications of Myoclonus
Prognosis of Myoclonus: Although myoclonus is not a life-threatening condition, it may result in serious, debilitating impairments. (Source: excerpt from NINDS Myoclonus Information Page: NINDS)

What causes Myoclonus?

Causes of Myoclonus: see causes of Myoclonus

What are the symptoms of Myoclonus?

Symptoms of Myoclonus: see symptoms of Myoclonus

Complications of Myoclonus: see complications of Myoclonus

Myoclonus: Testing

Diagnostic testing: see tests for Myoclonus.

Misdiagnosis: see misdiagnosis and Myoclonus.

How is it treated?

Doctors and Medical Specialists for Myoclonus: Neurologist ; see also doctors and medical specialists for Myoclonus.
Treatments for Myoclonus: see treatments for Myoclonus
Research for Myoclonus: see research for Myoclonus

Society issues for Myoclonus


Hospitalization statistics for Myoclonus: The following are statistics from various sources about hospitalizations and Myoclonus:

  • 0.004% (471) of hospital consultant episodes were for myoclonus in England 2002-03 (Hospital Episode Statistics, Department of Health, England, 2002-03)
  • 86% of hospital consultant episodes for myoclonus required hospital admission in England 2002-03 (Hospital Episode Statistics, Department of Health, England, 2002-03)
  • 44% of hospital consultant episodes for myoclonus were for men in England 2002-03 (Hospital Episode Statistics, Department of Health, England, 2002-03)
  • 56% of hospital consultant episodes for myoclonus were for women in England 2002-03 (Hospital Episode Statistics, Department of Health, England, 2002-03)
  • 47% of hospital consultant episodes for myoclonus required emergency hospital admission in England 2002-03 (Hospital Episode Statistics, Department of Health, England, 2002-03)
  • more statistics...»

Organs Affected by Myoclonus:

Organs and body systems related to Myoclonus include:

Name and Aliases of Myoclonus

Main name of condition: Myoclonus

Other names or spellings for Myoclonus:

Myoclonus: Related Conditions

Research the causes of these diseases that are similar to, or related to, Myoclonus:

 

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