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Narcolepsy

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Narcolepsy is a chronic sleep disorder characterized by pervasive, uncontrolled sleepiness and other sleep disturbances. One of its hallmark symptoms is an abrupt transition to REM sleep upon falling asleep, which causes symptoms typically associated with this phase to occur unexpectedly during wakefulness. These include the following symptoms, which typically last from a minute or two to half an hour.
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The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...
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Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
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Related Experiment Video

Updated: Jan 12, 2026

Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood
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Napping and psychiatric disorders: A systematic review.

Sara Bianchi1, Sibylle Mauries2, Celia Heiligenstein3

  • 1Local Health Unit Umbria 1, Department of Mental Health, Mental Health Centre of Media Valle del Tevere, Marsciano, Italy.

Sleep Medicine Reviews
|November 6, 2025
PubMed
Summary

Daytime napping is common in psychiatric disorders and may worsen health. This review highlights napping as a potential risk and prognostic factor, recommending clinical assessment for patients with mental health conditions.

Keywords:
DepressionInsomniaMajor depressive disorderNappingSchizophreniaanxiety disorderbipolar disorder

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Area of Science:

  • Psychiatry and Sleep Science
  • Clinical Psychology
  • Public Health

Background:

  • Napping is linked to adverse health in healthy adults.
  • Limited research exists on napping in psychiatric disorders.
  • Understanding napping's role is crucial for patient care.

Conclusions:

  • Daytime napping is prevalent in psychiatric disorders and warrants clinical attention.
  • Napping can be a significant risk and/or prognostic factor in mental health.
  • Systematic clinical assessment of napping is recommended for psychiatric patients.