Medical Terminology

hypersomnolence disorder

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In general, anyone who meets ICSD-3 criteria for IH would meet DSM-5 criteria for hypersomnolence disorder, but not vice versa. The ICSD-3 also requires objective diagnostic measurements (e.g., MSLT, extended EEG recordings) and longer sleep times (11+ hours of sleep in the ICSD-3 vs. 9+ hours in DSM-5). Read more About IH.