hypersomnolence« Back to Glossary IndexHypersomnolence refers to the symptoms of long sleep and/or excessive daytime sleepiness. For more details, see Classification of Hypersomnias.Related Articles: Hypersomnia Foundation Hosted the Largest Patient-Centered Sleep Conference Ever This JuneNews From World Sleep 2022 in Rome!Guide for Sleep & Research Study CentersIn Case You Missed It! – October 2021Diagnosing Hypersomnias Differently—A European ProposalIn Case You Missed It! – September 2021Free Access to the Idiopathic Hypersomnia Severity ScaleVIRTUAL: Diagnosing Hypersomnia Differently—A European ProposalHealth and Prescription Medicine InsuranceIn Case You Missed It! – December 2020In Case You Missed It! – November 2020VIRTUAL: HF's The Research Continues2018 ConferenceJoin the International Patient RegistryClassification of HypersomniasAbout Related Sleep Disorders (Hypersomnias)Treatment for Idiopathic Hypersomnia & NarcolepsyHF’s “HINT” Test for Identifying Possible Sleep DisordersGlossary: PWHSummary of “Establishing the Objective Sleep Phenotype in Hypersomnolence Disorder [IH] with and without Comorbid Major Depression”