HCRT and Cataplexy: The current diagnostic criteria for narcolepsy type 1 are as follows: a mean MSLT sleep latency < 8 min, ≥ 2 sleep-onset rapid eye movements periods (SOREMPs) on MSLT, and decreased hypocretin-1 (hcrt1) cerebrospinal fluid (CSF) concentrations or clear-cut cataplexy [103].