The first time it happened, I genuinely thought something was wrong with Owen. He was 15 months old. About an hour after bedtime, he started screaming — not crying, screaming — and when I rushed in, his eyes were open but he wasn’t seeing me.
I picked him up and he thrashed and arched away like I was a stranger. He didn’t respond to his name, to my voice, to anything. It lasted a few minutes that felt like a year, and then he just… stopped, flopped against my shoulder, and went back to sleep like nothing happened.
I, on the other hand, did not go back to sleep. I went straight into a research spiral. Here’s what I learned about night terrors, how they differ from nightmares, and what you should and absolutely should not do.
What a night terror actually is
A night terror (or sleep terror) is a partial arousal from deep, non-REM sleep. The kid is caught between sleep stages — not awake, not in normal sleep — and the result is dramatic: screaming, thrashing, sweating, a racing heart, eyes open but vacant.
The defining, eerie feature is that the child is not actually awake and isn’t aware of you. That’s why Owen didn’t respond to me — there was no “him” to respond. The lights were on but nobody was home, and that’s exactly what made it so frightening to watch.
They typically happen in the first few hours of sleep, during the deepest sleep stages, and they’re most common in toddlers and young kids. They can be triggered by overtiredness, being sick or feverish, or a disrupted schedule. Owen’s first one came after a nap-skipping, overstimulated day.
How it’s different from a nightmare
This was the distinction that finally calmed me down. Night terrors and nightmares are completely different events, and telling them apart tells you exactly what to do.
Nightmares are bad dreams during REM sleep, which happens in the later part of the night. With a nightmare, the kid actually wakes up, is scared but lucid, recognizes you, wants comfort, and can often (as they get older) remember and describe the dream. You comfort them, reassure them, and they remember it the next day.
Night terrors are the opposite on nearly every axis: early in the night, deep non-REM sleep, the child is NOT awake, doesn’t recognize you, can’t be comforted in the moment, and has zero memory of it the next morning. Owen woke up the next day completely cheerful, with no idea anything had happened. I was the only one traumatized.
What to do (and what NOT to do)
Here’s the counterintuitive part, and the most important thing I learned: during a night terror, you mostly do NOT intervene the way your instincts scream at you to.
Do NOT try to wake them. Waking a kid out of a night terror tends to confuse and upset them more, and can actually prolong it. Do NOT try to forcefully hold or restrain them if they’re thrashing — that can escalate it. And don’t expect to comfort them out of it, because they’re not awake to be comforted.
What you DO: keep them safe. Stay nearby, make sure they can’t hurt themselves (especially relevant now that Owen’s in a bed, not a crib), speak calmly and quietly, and just wait it out. It will pass on its own, usually in a few minutes, and they’ll settle back into sleep. The hardest part is doing almost nothing while every cell in your body wants to fix it.
The “keep them safe” part gets much more relevant once they’ve moved to an open bed. If you’re navigating the toddler sleep in an open bed phase at the same time as night terrors, the boring-return method for nighttime wandering is compatible — just make sure the room is safe enough that a night terror won’t result in a fall. And for context on why toddlers end up in an open bed in the first place, our post on the toddler bed transition covers the timing and safety setup.
How we reduced them
Since overtiredness is a major trigger, the most effective prevention for us was — predictably — protecting Owen’s sleep. We got militant about not skipping naps and keeping a consistent bedtime. Fewer overtired nights meant fewer terrors.
There’s also a technique called “scheduled awakenings” for kids who have them at a predictable time: you gently rouse the child about 15-30 minutes before the terror usually hits, which disrupts the deep-sleep cycle that triggers it. We didn’t need to go that far, but it’s a real, research-backed option if they’re frequent and clockwork-regular.
One more reassurance: night terrors look horrifying but they’re generally harmless and kids outgrow them. They’re not a sign of psychological distress or trauma. If they’re very frequent, very prolonged, or involve any unusual movements, that’s worth a chat with the pediatrician — but the typical occasional terror is just a wiring quirk of a developing brain. The same is true of the broader sleep disruptions that overtired toddlers go through — the 4-month sleep regression post covers the biological basis of why overtiredness disrupts sleep so dramatically.
If you just lived through your first one
A night terror is one of the scariest things you’ll watch as a parent precisely because your kid is right there and completely unreachable. But it’s not a nightmare, it’s not dangerous, and they won’t remember it — only you will.
Keep them safe, resist the urge to wake them, wait it out, and protect their sleep to cut down on repeats. And if you’re still shaky an hour after, standing in the hallway wondering what just happened to your child: that was me too. Owen woke up the next morning grinning, with no clue. He’s fine. You’re fine. Go get some water and try to sleep. You’ve got this.
Frequently Asked Questions
How do I tell the difference between a night terror and a nightmare?
The key differences: night terrors happen in the first 1–3 hours of sleep (deep non-REM), the child is NOT actually awake, won’t recognize you, can’t be comforted, and has no memory of it the next day. Nightmares happen in the later part of the night (REM sleep), the child wakes up scared but lucid, recognizes you, wants comfort, and may remember the dream. Night terrors look more dramatic but are less distressing to the child.
Should I wake my toddler during a night terror?
No — this is the counterintuitive but important rule. Waking a child in the middle of a night terror typically makes it worse, prolonging and intensifying the episode. Your job is to keep them safe (make sure they can’t hurt themselves if they thrash), stay nearby, speak quietly, and wait it out. It will end on its own, usually within a few minutes, and they’ll settle back into sleep.
What causes night terrors in toddlers?
The main trigger is overtiredness — a toddler who’s missed a nap, had a late bedtime, or had an overstimulating day is more likely to have a night terror. Illness with fever, schedule disruptions, and travel can also trigger them. The underlying mechanism is a partial arousal from deep non-REM sleep; anything that deepens or disrupts that sleep stage can precipitate an episode.
Are night terrors a sign of trauma or psychological problems in toddlers?
No. Night terrors are a normal developmental phenomenon, most common between ages 18 months and 6 years, caused by an immature sleep system rather than emotional distress. The child has no memory of the event and is not in psychological distress during it — only the watching parent is. Frequent, prolonged, or unusual terrors are worth mentioning to the pediatrician, but occasional ones are not a cause for concern.