Daytime Sleepiness Test

How to take the test

Answer all 8 items based on your usual life over the last few weeks. For each situation, rate your chance of dozing off or falling asleep — not just your chance of feeling tired. "Very unlikely to doze off" is a 0; "very likely to doze off" is a 3. Add the eight values together for a total between 0 and 24.

This sleepiness self assessment is deliberately about behavior, not feelings. A daytime fatigue test asks you whether you're tired; a sleepiness test like this asks how likely you are to actually fall asleep — and those are two different questions. People can feel tired without being sleepy, and vice versa.

What your score means

Use the score as a starting point for self-understanding, not a diagnosis. The four bands below describe what each range commonly indicates and what's worth doing about it.

• 0–7 Normal sleepiness A typical level of daytime sleepiness for healthy adults who sleep enough. Most people without a sleep disorder land here. Keep doing what you're doing — consistent sleep and wake times, morning daylight, limited late caffeine.
• 8–9 Mild excessive sleepiness A little above typical — borderline rather than alarming. The most common cause is mild chronic sleep loss. Worth reviewing the basics: are you getting 7+ hours, going to bed at consistent times, avoiding alcohol close to sleep, and getting daylight in the morning?
• 10–15 Moderate excessive sleepiness Clearly above typical. At this level, sleepiness can affect driving, work performance, mood, and relationships. Insufficient sleep is the usual culprit, but if your score stays here despite getting 7–9 hours a night, a conversation with your doctor is reasonable — undiagnosed sleep apnea is a frequent cause.
• 16–24 Severe excessive sleepiness Strongly suggests either a treatable sleep disorder or significant chronic sleep loss. Daytime sleepiness in this range raises real risks for car accidents and on-the-job injuries. Please speak with a sleep specialist or your primary care doctor — assessment for obstructive sleep apnea, narcolepsy, or another sleep disorder is warranted.

Your score reflects the tendency to fall asleep in passive, low-stimulus situations. A high score doesn't pinpoint the cause — it just signals that something is interfering with daytime alertness. Common contributors include obstructive sleep apnea, chronic insufficient sleep, irregular sleep schedules, shift work, narcolepsy, depression, and certain medications (sedating antihistamines, benzodiazepines, some antidepressants).

When to see a doctor

Consider seeing a doctor or a sleep specialist if any of the following apply:

• Your score is 10 or higher
• You snore loudly, gasp, or have been observed to stop breathing during sleep
• You wake up unrefreshed despite sleeping 7+ hours
• You experience sudden muscle weakness with strong emotions (a possible cataplexy symptom)
• Daytime sleepiness is affecting your driving, work, or relationships

Sleep medicine has good treatments for the most common causes of excessive daytime sleepiness — and untreated sleep disorders carry real cardiovascular and accident risks. The earlier they're caught, the easier they are to treat.

About this test

This self-assessment is inspired by the clinical Epworth Sleepiness Scale (ESS), developed by Dr. Murray Johns in 1991 at the Epworth Hospital in Melbourne, Australia. The ESS has been used worldwide by sleep specialists for over three decades and remains the most widely cited sleepiness scale in research and clinical practice. Our adapted version uses similar everyday situations and the same 0–3 chance-of-dozing scoring concept to help you reflect on your daytime sleepiness, but it is not the official ESS. For clinical assessment, please consult a sleep medicine specialist.