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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:
Restless Leg Syndrome and Night Terrors01:27

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.
The exact cause of RLS is not fully understood, but it is believed to involve dopamine, a neurotransmitter that helps regulate muscle movement. Imbalances in dopamine levels...
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...
Multiple Sclerosis l: Introduction01:19

Multiple Sclerosis l: Introduction

Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...
Substance Use Disorders Affecting Sleep01:24

Substance Use Disorders Affecting Sleep

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.
Understanding the concepts of physical dependence,...

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Related Experiment Video

Updated: Jun 6, 2026

The bm12 Inducible Model of Systemic Lupus Erythematosus (SLE) in C57BL/6 Mice
12:04

The bm12 Inducible Model of Systemic Lupus Erythematosus (SLE) in C57BL/6 Mice

Published on: November 1, 2015

[Narcolepsy associated with systemic lupus erythematosus].

F Haddad1, S Anouti, G Maalouly

  • 1Service de médecine interne, hôpital universitaire Hôtel-Dieu de France, Ashrafieh, Beyrouth, Liban. prfghaddad@yahoo.com

La Revue De Medecine Interne
|December 15, 2010
PubMed
Summary
This summary is machine-generated.

Narcolepsy, a sleep disorder, can be a rare manifestation of systemic lupus erythematosus (SLE). This case study shows narcolepsy symptoms improved with SLE treatment, suggesting a link between the two conditions.

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Polygraphic Recording Procedure for Measuring Sleep in Mice
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Polygraphic Recording Procedure for Measuring Sleep in Mice

Published on: January 25, 2016

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Last Updated: Jun 6, 2026

The bm12 Inducible Model of Systemic Lupus Erythematosus (SLE) in C57BL/6 Mice
12:04

The bm12 Inducible Model of Systemic Lupus Erythematosus (SLE) in C57BL/6 Mice

Published on: November 1, 2015

Polygraphic Recording Procedure for Measuring Sleep in Mice
08:45

Polygraphic Recording Procedure for Measuring Sleep in Mice

Published on: January 25, 2016

Area of Science:

  • Neurology
  • Immunology
  • Sleep Medicine

Background:

  • Systemic lupus erythematosus (SLE) is an autoimmune disease with diverse neurologic and psychiatric manifestations.
  • Narcolepsy is a chronic sleep disorder, often linked to autoimmune processes, but rarely associated with SLE.

Observation:

  • A 36-year-old woman presented with narcolepsy, characterized by excessive daytime sleepiness.
  • She later developed diagnosed systemic lupus erythematosus.

Findings:

  • The patient's narcolepsy symptoms, including excessive daytime sleepiness, resolved following treatment for SLE.
  • Treatment involved intravenous cyclophosphamide and methylprednisolone, followed by maintenance therapy with hydroxychloroquine, aspirin, and prednisone.

Implications:

  • Narcolepsy should be considered a potential neuropsychiatric manifestation of systemic lupus erythematosus.
  • The clinical course of narcolepsy may parallel the activity of systemic lupus erythematosus, highlighting the need for integrated patient management.