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[Periodic limb movement disorder]

T Nozawa1

  • 1Department of Neurology, Showa University School of Medicine.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|March 21, 1998
PubMed
Summary
This summary is machine-generated.

Periodic limb movements (PLM) involve repetitive limb motions during sleep, often linked to conditions like sleep apnea. Diagnosis of periodic limb movement disorder (PLMD) requires polysomnography (PSG).

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Area of Science:

  • Neurology
  • Sleep Medicine

Context:

  • Periodic limb movements (PLM) are characterized by stereotyped limb movements during sleep.
  • Historically termed "nocturnal myoclonus," the name changed due to movement speed.
  • PLM are associated with various sleep disorders and medical conditions.

Purpose:

  • To define periodic limb movements (PLM) and their characteristics.
  • To highlight the association of PLM with other health issues.
  • To emphasize the diagnostic necessity of polysomnography (PSG) for periodic limb movement disorder (PLMD).

Summary:

  • Periodic limb movements (PLM) are defined as stereotyped, periodic movements of the legs and/or upper limbs during sleep.
  • These movements involve dorsiflexion of the ankle and extension of the big toe, with occasional knee and hip flexion.

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  • PLM prevalence increases with age and is linked to conditions such as sleep apnea, narcolepsy, diabetes, and uremia, causing daytime sleepiness or insomnia.

    • Impact:

    • Clarifies the definition and clinical presentation of PLM.
    • Underscores the importance of PSG for accurate PLMD diagnosis.
    • Raises awareness of PLM's association with other medical conditions and its impact on sleep quality.