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Sleep abnormalities in progressive supranuclear palsy.

M S Aldrich1, N L Foster, R F White

  • 1Department of Neurology, University of Michigan Medical Center, Ann Arbor, 48109-0316.

Annals of Neurology
|June 1, 1989
PubMed
Summary
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Progressive supranuclear palsy (PSP) patients experience severe insomnia, with over 4 hours awake nightly. Sleep disturbances worsen with increased motor and cognitive impairment, indicating a link between PSP severity and insomnia.

Area of Science:

  • Neurology
  • Sleep Medicine
  • Neurodegenerative Diseases

Background:

  • Progressive supranuclear palsy (PSP) is a rare neurodegenerative disorder.
  • Sleep disturbances, particularly insomnia, are common in neurodegenerative conditions.
  • The specific relationship between PSP severity and insomnia requires further elucidation.

Purpose of the Study:

  • To investigate sleep patterns in patients with moderate to severe PSP.
  • To correlate sleep disturbances with quantitative measures of disease severity in PSP.
  • To compare insomnia severity in PSP with that in Parkinson's disease and Alzheimer's disease.

Main Methods:

  • Sleep patterns were monitored for three consecutive nights in 10 individuals with PSP.
  • Quantitative measures assessed motor, cognitive, and eye movement impairment.

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  • Correlations were drawn between sleep parameters and disease severity metrics.

    • Main Results:

    • All 10 subjects exhibited severe insomnia, averaging over 4 hours awake per night.
    • Increased motor impairment correlated with shorter sleep latency and more awakenings.
    • Worsening dementia was associated with a decline in total sleep time.

    Conclusions:

    • Insomnia in PSP is significantly related to the severity of the disease.
    • PSP-associated insomnia appears more pronounced than in Parkinson's or Alzheimer's disease.
    • Degenerative changes in brain structures regulating sleep maintenance may underlie PSP insomnia.