Definition of cataplexy in English:


Line breaks: cata|plexy
Pronunciation: /ˈkatəˌplɛksi


[mass noun]
A medical condition in which strong emotion or laughter causes a person to suffer sudden physical collapse though remaining conscious.
More example sentences
  • Not enough people suffer from cataplexy for a major drug company to bother investing in research and development of this medicine.
  • You will often also experience cataplexy (sudden loss of muscular control) triggered by emotion, especially amusement, anger, and elation.
  • The combination of daytime sleepiness, cataplexy, sleep paralysis, and hypnagogic hallucinations suggested narcolepsy.


late 19th century: from Greek kataplēxis 'stupefaction', from kataplessein, from kata- 'down' + plēssein 'strike'.



Pronunciation: /-ˈplɛktɪk/
More example sentences
  • The dog had one more cataplectic episode 2 months after discharge and became more and more aggressive.
  • She had a history of migraine headaches, but denied loss of consciousness and spontaneous cataplectic episodes.
  • During a cataplectic attack, the person is completely awake and later will have total recall of the entire event.

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cause (someone) to lose confidence or hope; dispirit