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Task Interruption and Resumption Paradigm for Testing the Activation and Pursuit of an Abstract Thinking Goal
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Thinking outside the box: cataplexy without narcolepsy.

Fernando Cascio Barros Lima1, Elias Borges do Nascimento Junior1, Silmar Silva Teixeira1

  • 1Universidade Federal do Piauí (UFPI), Parnaíba, PI, Brazil.

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|August 21, 2019
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Summary
This summary is machine-generated.

Cataplexy, a sudden muscle tone loss, can occur independently of narcolepsy, often due to rare genetic disorders or certain medications. This review highlights these non-narcolepsy causes, especially in children.

Keywords:
Angelman SyndromeCataplexyNarcolepsyNiemann-Pick type C DiseaseNorrie DiseasePrader-Willi Syndrome

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Area of Science:

  • Neurology
  • Genetics
  • Pharmacology

Background:

  • Cataplexy is characterized by a transient loss of muscle tone, often triggered by emotions.
  • While classically associated with narcolepsy, cataplexy can stem from other causes.
  • These include rare genetic disorders (Niemann-Pick type C, Angelman, Norrie, Prader-Willi syndromes) and drug side effects (lamotrigine, clozapine, gamma-hydroxybutyrate).

Purpose of the Study:

  • To differentiate cataplexy from narcolepsy, particularly in pediatric cases.
  • To review and describe conditions causing cataplexy unrelated to narcolepsy.
  • To emphasize the importance of recognizing non-narcolepsy-related cataplexy.

Main Methods:

  • A comprehensive literature review was conducted.
  • Databases searched included MEDLINE and EMBASE.
  • No date or publication restrictions were imposed.

Main Results:

  • Several rare genetic diseases are identified as prevalent causes of cataplexy independent of narcolepsy.
  • Certain medications were also identified as potential triggers for cataplexy.
  • The review details specific conditions presenting with cataplexy without narcolepsy.

Conclusions:

  • Cataplexy should be considered separately from narcolepsy, especially in pediatric populations and post-medication use.
  • Recognizing these distinct causes is crucial for accurate diagnosis and management.
  • Further research into non-narcolepsy-related cataplexy is warranted.