Diseases

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 SYSTEM DISEASES; (e.g., EPILEPSY, MYOCLONIC). Nocturnal myoclonus is the principal feature of the NOCTURNAL MYOCLONUS SYNDROME. (From Adams et al., Principles of Neurology, 6th ed, pp102-3).

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

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 SYSTEM DISEASES; (e.g., EPILEPSY, MYOCLONIC). Nocturnal myoclonus is the principal feature of the NOCTURNAL MYOCLONUS SYNDROME. (From Adams et al., Principles of Neurology, 6th ed, pp102-3).

MeSH Record

Classification

Broader headings

Related Concepts

Knowledge Graph

Loading graph…

Drag nodes to rearrange; hover to trace links; click a node to open its page.

MeSH Record

Synonyms

31 entry terms
  • Myoclonic Jerk
  • Myoclonic Jerking
  • Jerk, Myoclonic
  • Jerking, Myoclonic
  • Jerks, Myoclonic
  • Myoclonic Jerks
  • Myoclonus Simplex
  • Myoclonus, Action
  • Myoclonus, Eyelid
  • Myoclonus, Intention
  • Myoclonus, Lower Extremity
  • Myoclonus, Nocturnal
  • Myoclonus, Oculopalatal
  • Myoclonus, Palatal
  • Myoclonus, Segmental
  • Myoclonus, Sleep
  • Myoclonus, Upper Extremity
  • Polymyoclonus
  • Action Myoclonus
  • Extremity Myoclonus, Lower
  • Extremity Myoclonus, Upper
  • Eyelid Myoclonus
  • Intention Myoclonus
  • Lower Extremity Myoclonus
  • Nocturnal Myoclonus
  • Oculopalatal Myoclonus
  • Palatal Myoclonus
  • Segmental Myoclonus
  • Simplex, Myoclonus
  • Sleep Myoclonus
  • Upper Extremity Myoclonus

MeSH Record

Aspects Covered

35 allowable subheadings

Indexed with the subheadings blood, cerebrospinal fluid, chemically induced, classification, complications, congenital, diagnosis, diagnostic imaging, diet therapy, drug therapy, economics, embryology, enzymology, epidemiology, ethnology, etiology, genetics, history, immunology, metabolism, microbiology, mortality, nursing, parasitology, pathology, physiopathology, prevention & control, psychology, radiotherapy, rehabilitation, surgery, therapy, urine, veterinary, virology.

MeSH Record

Indexing Annotation

for "myoclonic seizure" consider MYOCLONUS or EPILEPSY, MYOCLONIC or SPASMS, INFANTILE; note other myoclonus terms are also available

MeSH Record

History Note

1963; for MYOCLONIC JERKING use EPILEPSY, MYOCLONIC 1992-1999; for MYOCLONIC JERKING, MASSIVE use SPASMS, INFANTILE 1977-1999

MeSH Hierarchy

Tree Numbers

MeSH Record

NLM Classification

WE 550

AMA Style

References

  1. National Library of Medicine. Myoclonus. Medical Subject Headings (MeSH). 2026. Unique ID D009207. http://id.nlm.nih.gov/mesh/2026/D009207
  2. Myoclonus. In: Wikipedia. https://en.wikipedia.org/wiki/Myoclonus
  3. Myoclonus. In: Wikidata. https://www.wikidata.org/wiki/Q116275