Medical Terminology


« Back to Glossary Index

PWH is an acronym that is used by HF to refer to a person with a hypersomnia (or people with hypersomnias). 

The Hypersomnia Foundation follows the ICSD-3’s definition of hypersomnia, in which the term is distinct from the diagnosis of “idiopathic hypersomnia” and the symptom of “hypersomnolence.” Consequently, hypersomnia refers more generally to any of several specific diagnoses whose main symptoms include excessive sleep and/or excessive sleepiness, such as idiopathic hypersomnia (IH) and the related sleep disorders (narcolepsy types 1 and 2, Kleine-Levin syndrome, hypersomnia due to a medical condition, etc.). Therefore, when the term PWH is used, it refers to a person (or people) who has IH or another hypersomnia. In other words, PWH is a broader and more inclusive term than PWN (person[s] with narcolepsy) or PWIH (person[s] with IH).


The contents of this website, including text, graphics and other material, are for informational purposes only. This website is not intended to be a substitute for professional legal or medical advice, diagnosis or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Always consult your own attorney or other legal advisor with any legal questions you may have. The Hypersomnia Foundation does not recommend or endorse any specific tests, physicians, lawyers, legal advisors, products, procedures, opinions or other information referenced on this website. Reliance on any information on this website is solely at your own risk.

The Hypersomnia Foundation makes no representations or warranties about the satisfaction of any government regulations requiring disclosure of information on prescription drug products. In no event shall The Hypersomnia Foundation be liable for any damages (including without limitation incidental and consequential damages) or costs (including without limitation attorney’s fees) based on any claim arising from the use of this website and/or its content.