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Cataplexy without narcolepsy is rare and the cause is unknown. The term cataplexy originates from the Greek κατά ( kata , meaning "down"), and πλῆξις ( plēxis , meaning "strike") [ 4 ] and it was first used around 1880 in German physiology literature to describe the phenomenon of tonic immobility also known as " playing possum " (in ...
Narcolepsy is a chronic neurological disorder that impairs the ability to regulate sleep–wake cycles, and specifically impacts REM (rapid eye movement) sleep. [1] The pentad symptoms of narcolepsy include excessive daytime sleepiness (EDS), sleep-related hallucinations, sleep paralysis, disturbed nocturnal sleep (DNS), and cataplexy. [1]
Usually, people with this disorder have ataxia, mild–moderate sensorineural hearing loss, narcolepsy, and cataplexy. These symptoms start happening when an affected person is about 30 years old. [6] [7] A bit later in life, people with ADCADN start showing a decline in executive function known as dementia.
Orexin (/ ɒ ˈ r ɛ k s ɪ n /), also known as hypocretin, is a neuropeptide that regulates arousal, wakefulness, and appetite. [5] It exists in the forms of orexin-A and orexin-B.The most common form of narcolepsy, type 1, in which the individual experiences brief losses of muscle tone ("drop attacks" or cataplexy), is caused by a lack of orexin in the brain due to destruction of the cells ...
Pediatric narcolepsy cases are cases when patients are diagnosed or experience symptoms onset for narcolepsy before the age of 18. Of patients who obtain a formal diagnosis for narcolepsy, more than 50% report first experiencing symptoms of narcolepsy more than 10 years before their formal diagnosis, with an average age of symptom onset being at age 15 and symptom onset most likely to occur ...
Narcolepsy has been divided into narcolepsy type 1 and narcolepsy type 2. These two types are distinguished by the presence or absence of cataplexy and the cerebrospinal fluid hypocretin-1 level. Concerning parasomnia, the sections have been modified, grouping together common features.
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