Non-24-hour sleep-wake syndrome
Synonyms: Hypernychthemeral syndrome
A rare neurological disease which is a circadian rhythm sleep disorder characterized by non-synchronization to a 24-hour day leading to insomnia and daytime sleepiness with sometimes severe associated manifestations.
Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview.
Reference: Access aggregated data from Orphanet at Orphadata.
Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http: //www.orphadata.org. Data version September 2023.
Newly diagnosed with
Non-24-hour sleep-wake syndrome?
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Advocacy Organizations
FamilieSCN2A Foundation
We are an organization created by parents of children diagnosed with rare forms of Epilepsy and Autism as a result of a change in the SCN2A gene. Our vision is to find effective treatments and a cure for SCN2A related disorders. Our mission is to improve the lives of those affected by SCN2A related disorders through research, public awareness, family support and patient advocacy.
Moonshots for Unicorns
Curing single-gene disorders
COMBINEDBrain Inc
COMBINEDBrain is a consortium for outcome measures and biomarkers for neurodevelopmental disorders. We are collaborating to cure rare, non-verbal brain disorders.
Clinical Trials
For a list of clinical trials in this disease area, please click here.