Narcolepsy is a chronic neurological condition producing disruption to the normal sleep pattern. This produces excessive sleepiness. Narcolepsy may occur with or without cataplexy. Cataplexy is a sudden loss of muscle tone and power in response to strong emotion - it always and only occurs as part of narcolepsy .
This is a companion discussion topic for the original article at https://patient.info/doctor/history-examination/narcolepsy-and-cataplexy-pro