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Myoclonus

A movement disorder characterized by sudden, brief, involuntary muscle jerks.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Nöroloji department. Book Appointment →

What is Myoclonus?

Myoclonus refers to sudden, brief, lightning-like involuntary contractions of muscles. Sleep starts (hypnic jerks) and hiccups are physiological examples; pathological myoclonus may be related to epilepsy, metabolic disorders, degenerative diseases, and toxic conditions.

It is classified by origin into cortical, subcortical, spinal, and peripheral types. It can be multifocal, focal, or generalized; it may occur at rest, with action, or be triggered by stimuli.

Detailed neurological examination, EEG, imaging, and metabolic-toxic screening play roles in diagnosis. Identifying the underlying cause is critical for treatment success.

Symptoms

Sudden muscle jerks
Brief contractions in arm, leg, or facial muscles
Jerking sensation at sleep onset
Hiccup-like contractions
Triggered by sound, touch, or movement
Coordination difficulty and falls
Accompanying seizures (in some types)

Risk Factors

Epilepsy syndromes (juvenile myoclonic epilepsy, etc.)
Metabolic disorders (kidney, liver failure)
Electrolyte imbalances
Drug side effects (opioids, antidepressants, lithium)
Hypoxia and post-cardiac arrest
Neurodegenerative diseases
Brain infections and autoimmune diseases

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • If sudden, recurrent muscle jerks are present
  • If jerks lead to falls or injuries
  • If altered consciousness or seizures accompany them
  • If daily life is affected and progression is observed
  • If they appear after starting a medication

Treatment Methods

01
Treatment of the underlying cause
02
Antiepileptics (valproate, levetiracetam, clonazepam)
03
Metabolic correction
04
Management of drug side effects
05
Physical therapy and support
06
Specialized neurology follow-up

Which Department to Visit?

You can visit our Nöroloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Let us help you

You can make an appointment with our specialists or contact us for your concerns.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.