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Related Concept Videos

Narcolepsy01:07

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 Cycles01:24

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:
Attention-Deficit/Hyperactivity Disorder01:30

Attention-Deficit/Hyperactivity Disorder

Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings.
REM Sleep Behavior Disorder01:15

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.
RBD is significantly associated with...
Nightmares and Night Terrors01:18

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.
Nightmares often...
Epilepsy ll: Types01:22

Epilepsy ll: Types

Recurrent seizures, stemming from abnormal electrical activity in the brain, are the defining characteristic of epilepsy, a chronic neurological condition. Because seizure features vary greatly, epilepsy is classified using two systems: by seizure type and by epilepsy syndromes. These classifications enable clinicians to describe seizure patterns and select suitable treatment strategies.I. Classification by Seizure Type1. Focal EpilepsyFocal epilepsy begins in one hemisphere of the brain.

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HLA-DQB1*03:01 strongly affects age of onset of type 1 narcolepsy independently of DQA1 and ethnicity.

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Related Experiment Video

Updated: Jun 26, 2026

Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood
08:20

Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood

Published on: October 2, 2019

Narcolepsy in childhood.

Sona Nevsimalova1

  • 1Department of Neurology, 1st Medical Faculty, Charles University, Katerinska 30, 128 00 Prague 2, Czech Republic. snevsi@lf1.cuni.cz

Sleep Medicine Reviews
|January 21, 2009
PubMed
Summary

Pediatric narcolepsy is often underdiagnosed, with symptoms appearing in childhood. Early diagnosis and treatment are crucial for managing this chronic condition and preventing academic and emotional issues.

Area of Science:

  • Neurology
  • Pediatrics
  • Sleep Medicine

Background:

  • Narcolepsy, a chronic neurological disorder, is frequently diagnosed in middle adulthood, yet initial symptoms often manifest during childhood or adolescence.
  • Pediatric narcolepsy cases are significantly underrecognized and underdiagnosed, leading to diagnostic delays and potential long-term consequences.

Purpose of the Study:

  • To highlight specific clinical features of narcolepsy in children.
  • To evaluate the role of auxiliary diagnostic examinations, including sleep studies, human leukocyte antigen (HLA) testing, and cerebrospinal fluid hypocretin (Hcrt) measurement.
  • To identify common misdiagnoses in pediatric narcolepsy cases.

Main Methods:

  • Review of clinical presentations in pediatric narcolepsy.
  • Discussion of diagnostic utility of sleep studies, HLA typing, and Hcrt levels.

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Event Related Potentials (ERPs) and other EEG Based Methods for Extracting Biomarkers of Brain Dysfunction: Examples from Pediatric Attention Deficit/Hyperactivity Disorder (ADHD)
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Event Related Potentials (ERPs) and other EEG Based Methods for Extracting Biomarkers of Brain Dysfunction: Examples from Pediatric Attention Deficit/Hyperactivity Disorder (ADHD)

Published on: March 12, 2020

Chronic Sleep Deprivation in Mouse Pups by Means of Gentle Handling
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Chronic Sleep Deprivation in Mouse Pups by Means of Gentle Handling

Published on: October 11, 2018

Related Experiment Videos

Last Updated: Jun 26, 2026

Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood
08:20

Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood

Published on: October 2, 2019

Event Related Potentials (ERPs) and other EEG Based Methods for Extracting Biomarkers of Brain Dysfunction: Examples from Pediatric Attention Deficit/Hyperactivity Disorder (ADHD)
10:02

Event Related Potentials (ERPs) and other EEG Based Methods for Extracting Biomarkers of Brain Dysfunction: Examples from Pediatric Attention Deficit/Hyperactivity Disorder (ADHD)

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Chronic Sleep Deprivation in Mouse Pups by Means of Gentle Handling
03:46

Chronic Sleep Deprivation in Mouse Pups by Means of Gentle Handling

Published on: October 11, 2018

  • Analysis of common misdiagnostic pitfalls in children.

    • Main Results:

    • Narcolepsy in children presents with unique clinical features beyond typical symptoms, including obesity and nocturnal eating.
    • Frequent cataplexy in early childhood warrants thorough investigation for secondary causes.
    • Associated issues like poor school performance and emotional disorders are common.

    Conclusions:

    • Early recognition and intervention for pediatric narcolepsy are essential to mitigate developmental and academic challenges.
    • Comprehensive diagnostic approaches are necessary to confirm narcolepsy and rule out other conditions.
    • Close collaboration between families and schools is vital for supporting affected children.