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Hypersomnolence disorder

Excessive drowsiness despite sleeping at least seven hours: involuntary napping, very long sleep or difficulty waking up completely.

Common signs

Excessive daytime sleepinessWaking up is very hardNaps that aren't refreshing

Tips

For you

  1. See a sleep clinic
  2. Regular sleep times
  3. Don't drive if you feel sleepy

For family and friends

  1. Avoid blaming them: it isn't laziness
  2. Encourage them to see a sleep clinic

When to ask for help

  1. If you fall asleep while driving: don't drive and get help
  2. If snoring or pauses in breathing appear

Guidance test

Answer thinking about the last few weeks. There are 8 questions and you get your result straight away. Your answers are not saved or sent.

0 of 8
1. I feel sleepy during the day even if I sleep more than seven hours
2. I find it very hard to wake up
3. I fall asleep without meaning to
4. Naps don't refresh me
5. I sleep more than nine hours and I'm still tired
6. Sleepiness makes it hard for me to perform
7. It has happened to me while driving
8. It happens to me almost every day
Also take the full insomnia test →

Free resources

Downloadable PDF sheetSigns, tips and resources to print or saveSpanish Sleep Society: information for patientsFree external resourceAll our free guidesFree resource from Clínica Vivaldi

Related disorders

InsomniaSleep-wakeNarcolepsySleep-wakeObstructive sleep apnoeaSleep-wakeDisorder of the circadian rhythm of sleep-wakeSleep-wake

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Reviewed by María Teresa Fernández Vicente, health psychologist and neuropsychologist (registration no. CV17304), in November 2026. Educational information prepared by the Clínica Vivaldi team based on the DSM-5-TR classification. It does not replace a professional assessment and cannot be used to diagnose.