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Parasomnias decline during pregnancy.

C Hedman1, T Pohjasvaara, U Tolonen

  • 1Department of Neurology, University of Oulu, Finland. christine.hedman@kolumbus.fi

Acta Neurologica Scandinavica
|March 12, 2002
PubMed
Summary

Pregnancy generally reduces parasomnias, especially for first-time mothers. Sleep talking, sleepwalking, and nightmares decreased, though sleep paralysis increased later in pregnancy.

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Area of Science:

  • Reproductive Health
  • Sleep Medicine
  • Neurology

Background:

  • Parasomnias are disruptive sleep disorders.
  • Pregnancy is a period of significant physiological and hormonal changes.
  • The impact of pregnancy on parasomnia prevalence is not well-understood.

Purpose of the Study:

  • To investigate the effects of pregnancy on the frequency of various parasomnias.
  • To compare changes in parasomnia prevalence between primiparous and multiparous women.

Main Methods:

  • A longitudinal study involving 325 mothers.
  • Questionnaires administered before pregnancy, during each trimester, and postpartum.
  • Assessment of parasomnias including sleep talking, sleepwalking, nightmares, hypnagogic hallucinations, bruxism, and sleep paralysis.

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Main Results:

  • Overall parasomnia frequency significantly decreased during pregnancy (P < 0.001).
  • Reductions were more pronounced in primiparas compared to multiparas.
  • Specific parasomnias like sleep talking, sleepwalking, nightmares, and bruxism decreased, while sleep paralysis increased in later pregnancy.

Conclusions:

  • Most parasomnias diminish during pregnancy, particularly in women experiencing their first pregnancy.
  • Pregnancy-induced hormonal and physiological shifts appear to influence parasomnia occurrence.
  • Sleep paralysis is an exception, showing increased prevalence in the second trimester.