Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan


  • Dona LockeEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_246


Excessive sleepiness; Idiopathic hypersomnia


Hypersomnia or excessive sleepiness is a condition in which a person has trouble staying awake during the day. There are many potential causes of hypersomnia including sleep disorders, sleep deprivation, obesity, drug or alcohol abuse, head injury or neurological disease, prescription medications, and genetics. According to the International Classification of Sleep Disorders, Third Edition (ICSD-3), hypersomnia is a symptom of multiple sleep disorders.


References and Readings

  1. American Academy of Sleep Medicine (2014). International classification of sleep disorders (3rd ed.). Chicago: American Academy of Sleep Medicine.Google Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Psychiatry and PsychologyMayo ClinicScottsdaleUSA