woman narcolepsy

How do I know if I may have excessive daytime sleepiness (EDS)?

Using the Epworth Sleepiness Scale (ESS) to screen for EDS.

The ESS is the most commonly used, validated subjective assessment of a patient’s sleepiness.1

  • Because patients often cannot report their own levels of EDS, the ESS may aid the interview process.2-5
    • It may also be useful to ask other individuals close to the subject (spouse, bed-partner, co-worker) to help complete the ESS.3
  • The ESS can also be used to monitor the progression of or improvement in EDS and has been shown to be reliable for test-retest use over a period of months.2,6
The ESS assesses the propensity to doze or fall asleep in 8 common daily activities.4,5
An ESS score of greater than 10 may indicate a potential sleep disorder including narcolepsy.5*

Administering the ESS questionnaire.4

Fill out this interactive form to become more familiar with the questionnaire for yourself or use it together with your patients. Just select the answers below that best apply for each situation.

Situation/Chance of
dozing

0 = Would never doze
1 = Slight chance of dozing
2 = Moderate chance of dozing
3 = High chance of dozing

Sitting and reading

Watching television

Sitting inactive in a public place (eg, a theater or a meeting)

As a passenger in a car for an hour without a break

Lying down to rest in the afternoon when
circumstances permit

Sitting and talking to someone

Sitting quietly after a lunch without alcohol

In a car, while stopped for a few minutes in traffic

Total Score : 0
The Epworth Sleepiness Scale (ESS)4,5*

Your ESS score is:

0

An ESS score greater than 10 suggests excessive daytime sleepiness. An ESS score of 16 or higher suggests a high level of excessive daytime sleepiness. You should discuss your ESS score with your sleep specialist.

Interpreting ESS Scores4,5

0

10

16

24

Normal levels of
sleepiness
Suggests excessive
daytime sleepiness (EDS)
Suggests a high level of
EDS

0

10

16

24

Normal levels of
sleepiness
Suggests excessive daytime sleepiness (EDS)
Suggests a high level of
EDS

The Narcolepsy Screener app is available for
both iPhone and Android devices.