Narcolepsy-Characteristics of those in the Borderland-We Need a Better Diagnostic Tool

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The criteria for the diagnosis of narcolepsy changed when the 2nd edition of the International Classification of Sleep Disorders supplanted the first edition (ICSD-1). The impact of using the updated criteria is unknown. We thus compared the characteristics of a population of patients diagnosed using ICSD- 2 with those that only met ICSD-1 criteria. Minimum criteria for narcolepsy in ICSD-1 are sleepiness with cataplexy, sleep paralysis, or hypnogogic hallucinations plus sleep latency <10 minutes or REM latency <20 min on polysomnography.

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