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Narcolepsy

Narcolepsy

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.

Sleep-Wake Cycles

Sleep-Wake Cycles

Sleep is an essential physiological process vital to maintaining overall well-being. The reticular activating system (RAS), a network of neurons in the brainstem, regulates wakefulness and sleep. While it may seem passive, sleep consists of distinct cycles, each with its unique characteristics and functions. Two key sleep phases are non-rapid eye movement (NREM) and rapid eye movement (REM).
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:

REM Sleep Behavior Disorder

REM Sleep Behavior Disorder

REM Sleep Behavior Disorder (RBD) is a sleep disorder characterized by the absence of muscle paralysis that normally occurs during the REM phase of sleep. This absence allows individuals to physically act out their dreams, which are often vivid and disturbing. Common behaviors exhibited during episodes include kicking, punching, and yelling. These actions can be dangerous, potentially leading to injuries for the person with RBD or their bed partner.
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Sleepwalking and Sleep Talking

Sleepwalking and Sleep Talking

Somnambulism, commonly known as sleepwalking, involves individuals engaging in activities ranging from simple walking to more complex behaviors such as driving. Sleepwalking typically occurs during the slow-wave sleep stages 3 and 4 early in the night when the person is not dreaming, contradicting the myth that sleepwalkers are acting out their dreams.
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Nightmares and Night Terrors

Nightmares and Night Terrors

Nightmares and night terrors represent two distinct types of sleep disturbances that differ in timing, characteristics, and the sleeper's recall of the event. Nightmares are vivid, disturbing dreams that usually awaken the sleeper from REM sleep, a stage of sleep where brain activity is high, and dreams are most frequent. Upon awakening, individuals often have detailed recollections of their nightmares, which can include themes of threats to survival, security, or self-esteem.
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Restless Leg Syndrome and Night Terrors

Restless Leg Syndrome and Night Terrors

Restless Leg Syndrome (RLS), also known as Willis-Ekbom disease, is a neurological disorder characterized by an uncontrollable urge to move the legs due to uncomfortable sensations. These sensations typically occur during periods of rest or inactivity, particularly when lying down or sitting, and can severely disrupt sleep.
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Related Experiment Video

Updated: Jul 4, 2025

A Chronic Sleep Fragmentation Model using Vibrating Orbital Rotor to Induce Cognitive Deficit and Anxiety-Like Behavior in Young Wild-Type Mice

A Chronic Sleep Fragmentation Model using Vibrating Orbital Rotor to Induce Cognitive Deficit and Anxiety-Like Behavior in Young Wild-Type Mice

Published on: September 22, 2020

The Parasomnias.

Oliviero Bruni¹, Lourdes M DelRosso², Maria Grazia Melegari¹

¹Department of Developmental and Social Psychology, Sapienza University of Rome, Via dei Marsi 78, Rome 00185, Italy.

The Psychiatric Clinics of North America

|February 1, 2024

Summary

This summary is machine-generated.

Parasomnias, common in childhood, often resolve naturally. Early management involves sleep hygiene and regular schedules, with expert referral for complex cases.

Keywords:

Confusional arousals NREM parasomnias REM-related parasomnias Sleep enuresis Sleep terrors Sleepwalking

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Published on: January 25, 2016

Area of Science:

Pediatric Sleep Medicine
Neuroscience
Child Psychiatry

Background:

Parasomnias are common sleep disorders in children, often resolving spontaneously.
Diagnosis of non-rapid eye movement (NREM) parasomnias relies on clinical descriptions and can be difficult.
Rapid eye movement (REM) parasomnias may indicate underlying psychiatric conditions.

Purpose of the Study:

To review the clinical presentation and management of parasomnias in children.
To emphasize the importance of recognizing parasomnias and their potential impact on quality of life.
To guide pediatricians and child psychiatrists in initial management strategies.

Main Methods:

Review of clinical descriptors for NREM and REM parasomnias.
Discussion of diagnostic challenges.
Outline of initial management approaches for pediatric parasomnias.

Main Results:

Parasomnias typically emerge in childhood and frequently resolve without intervention.
Accurate diagnosis, particularly for NREM parasomnias, can be challenging.
REM-related parasomnias may be associated with psychiatric comorbidities.

Conclusions:

Pediatricians and child psychiatrists need to be knowledgeable about parasomnias.
Initial management should focus on sleep hygiene, avoiding sleep deprivation, and consistent sleep schedules.
Referral to a sleep specialist is recommended when treatment requires specialized expertise.