ESS (Epworth Sleepiness Scale)
Last reviewed: 2026-07-27
Overview
The Epworth Sleepiness Scale estimates daytime sleepiness tendency. High scores may warrant sleep evaluation.
Measures: Daytime sleepiness
Score ranges (summary)
Normal range
Daytime sleepiness within common norms.
Excessive sleepiness
Higher sleepiness; discuss sleep disorders with a clinician.
Reference
Johns MW. A new method for measuring daytime sleepiness: the Epworth sleepiness scale. Sleep. 1991.
Medical disclaimer
This guide is for education only. Screening is not a diagnosis. Seek evaluation from a qualified clinician. In crisis, contact emergency services.