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Cataplexy is loss of muscular tone caused by strong emotion.
may complain that a surprise or hearing a joke results in loss of strength.
There is a spectrum of severity:
- jaw drop
- buckling knees
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
Last reviewed 04/2020