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2256 pages added, reviewed or updated during the last month (last updated: 20/4/2021)

2256 pages added, reviewed or updated during the last month (last updated: 20/4/2021)


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cataplexy

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Cataplexy is loss of muscular tone caused by strong emotion.

Patients may complain that a surprise or hearing a joke results in loss of strength.

There is a spectrum of severity:

  • mild:
    • jaw drop
    • neck sagging
    • buckling knees

  • severe:
    • collapse - may last several minutes

Cataplexy is a characteristic, but not essential, feature of narcolepsy:

  • if may be the presenting symptom in 4% of narcoleptics
  • 60-90% of patients with narcolepsy have cataplexy

Last reviewed 04/2020

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