Diseases

Nocturnal Myoclonus Syndrome

Excessive periodic leg movements during sleep that cause micro-arousals and interfere with the maintenance of sleep. This condition induces a state of relative sleep deprivation which manifests as excessive daytime hypersomnolence. The movements are characterized by repetitive contractions of the tibialis anterior muscle, extension of the toe, and intermittent flexion of the hip, knee and ankle. (Adams et al., Principles of Neurology, 6th ed, p387)

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Excessive periodic leg movements during sleep that cause micro-arousals and interfere with the maintenance of sleep. This condition induces a state of relative sleep deprivation which manifests as excessive daytime hypersomnolence. The movements are characterized by repetitive contractions of the tibialis anterior muscle, extension of the toe, and intermittent flexion of the hip, knee and ankle. (Adams et al., Principles of Neurology, 6th ed, p387)

MeSH Record

Classification

Broader headings

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MeSH Record

Synonyms

17 entry terms
  • Excessive Periodic Sleep-Related Leg Movements
  • Periodic Leg Movements, Excessive, Sleep-Related
  • Periodic Limb Movement Disorder
  • Periodic Movement Disorder, Sleep
  • Sleep Disorder, Periodic Movements
  • Sleep Myoclonus Syndrome
  • Sleep-Related Periodic Leg Movements, Excessive
  • Excessive Periodic Sleep Related Leg Movements
  • Myoclonus Syndrome, Nocturnal
  • Myoclonus Syndrome, Sleep
  • Myoclonus Syndromes, Sleep
  • Nocturnal Myoclonus Syndromes
  • Sleep Myoclonus Syndromes
  • Sleep Related Periodic Leg Movements, Excessive
  • Syndrome, Nocturnal Myoclonus
  • Syndrome, Sleep Myoclonus
  • Syndromes, Sleep 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

History Note

2000

MeSH Record

Previous Indexing

  • Movement Disorders (1966-1999)
  • Myoclonus (1966-1999)

MeSH Hierarchy

Tree Numbers

  1. C10w.886.425w.800.600w
  2. C10w.886.659w.618w

AMA Style

References

  1. National Library of Medicine. Nocturnal Myoclonus Syndrome. Medical Subject Headings (MeSH). 2026. Unique ID D020189. http://id.nlm.nih.gov/mesh/2026/D020189
  2. Nocturnal Myoclonus Syndrome. In: Wikipedia. https://en.wikipedia.org/wiki/Periodic_limb_movement_disorder
  3. Nocturnal Myoclonus Syndrome. In: Wikidata. https://www.wikidata.org/wiki/Q13038909