Night terrors are usually filed under "things that happen to small children," which makes them especially alarming when they strike an adult — or their partner, who's the one watching it. But adult night terrors are real, more common than people think, and fundamentally different from nightmares. Understanding what they are (and aren't) is the first step to calming them. (This is general information, not medical advice.)
Night terrors are not nightmares
This is the key distinction, and it changes everything:
| Night terror | Nightmare | |
|---|---|---|
| Sleep stage | Deep (non-REM) sleep | REM (dreaming) sleep |
| When | Usually first third of the night | Usually second half of the night |
| Are you awake? | No — partially aroused but not conscious | You wake up fully |
| Do you remember it? | Almost never | Often vividly |
| What it looks like | Screaming, thrashing, sitting up, terror, racing heart | You wake frightened, can recall the dream |
A night terror is a partial arousal from deep sleep — your body floods with fear and activity (screaming, bolting upright, a pounding heart, wide eyes) while your conscious mind is still essentially asleep. You're not having a bad dream; you're stuck halfway between deep sleep and waking. That's why you typically don't remember it, and why trying to wake or restrain someone mid-terror usually makes it worse. (How deep sleep differs from dreaming REM sleep.) Night terrors sit in the same family of deep-sleep parasomnias as sleepwalking.
What triggers them in adults
Unlike in children — where they're often just developmental and outgrown — adult night terrors more often have an identifiable trigger. The big ones:
- Sleep deprivation. The single most common trigger. Being short on sleep increases deep-sleep pressure, and these events arise out of deep sleep.
- Stress and anxiety. A keyed-up nervous system is more prone to these partial arousals. (The link between sleep and mental health.)
- Alcohol. It disrupts sleep architecture and is a frequent culprit.
- Fever and illness.
- Other sleep disorders — especially sleep apnea. Breathing disruptions can trigger the partial arousals that become night terrors, which is why untreated apnea sometimes hides behind them. (Signs of sleep apnea.)
- Certain medications, which is a conversation for your prescriber.
What to do
- During an episode, keep them safe — don't try to wake them. Gently guide them back to bed if needed, clear anything dangerous, and let it pass. Waking someone mid-terror tends to prolong the confusion and fear. They'll usually settle back into sleep on their own.
- Hunt down the trigger. This is where the real fix is. Are you sleep-deprived? Drinking in the evening? Under unusual stress? Addressing the trigger often resolves the terrors. Prioritizing enough sleep is frequently the single most effective move. (The fundamentals of sleeping better.)
- Screen for sleep apnea if the terrors are frequent, especially alongside snoring or unrefreshing sleep — treating the apnea can resolve the terrors. If you're unsure whether an underlying sleep problem is involved, a quick Titan Sleep Score quiz is a reasonable starting point.
- See a doctor if they're frequent, dangerous, or new in adulthood. New-onset adult night terrors, or ones involving violent movement or injury risk, warrant a medical evaluation — both to rule out underlying conditions and because effective help exists.
FAQ
What's the difference between a night terror and a nightmare? A nightmare is a bad dream in REM sleep that you wake from and often remember. A night terror is a partial arousal from deep (non-REM) sleep, usually in the first third of the night, in which you may scream, thrash, and look terrified while not actually awake — and almost never remember it afterward. They're completely different events.
Can adults have night terrors? Yes. They're more associated with children but genuinely occur in adults, often with an identifiable trigger such as sleep deprivation, stress, alcohol, fever, or an underlying sleep disorder like apnea. New-onset adult night terrors are worth a doctor's evaluation.
What causes night terrors in adults? The most common trigger is sleep deprivation, which increases deep-sleep pressure. Others include stress and anxiety, alcohol, fever or illness, certain medications, and other sleep disorders — especially sleep apnea, whose breathing disruptions can trigger the partial arousals behind terrors.
Should you wake someone having a night terror? No — trying to wake them usually prolongs the confusion and distress. Instead keep them safe: clear hazards, gently guide them back to bed if they're up, and let the episode pass. They'll typically settle back to sleep on their own and won't remember it.
The bottom line
Adult night terrors are a partial arousal from deep sleep — not a nightmare — which is why you scream and thrash but don't remember it. In adults they usually have a findable trigger: most often sleep deprivation, plus stress, alcohol, fever, or hidden sleep apnea. Keep the person safe during an episode without waking them, hunt down and fix the trigger (often just getting enough sleep), and see a doctor if they're frequent, violent, or new.