Nightmares vs. Night Terrors: What's Normal and How to Help Your Child
A Family Life Educator explains the difference between nightmares and night terrors, what's developmentally normal at each age, how to respond to each one and when it's worth a call to your pediatrician.
Here’s what to look at when your child is experiencing nightmares and night terrors
It's 3 a.m. and your child is screaming. You run in and find them sitting up, eyes wide, sweaty and inconsolable, looking right through you as if you aren't even there. Your heart is pounding. Take a breath, because in most cases this is a normal part of growing up and you haven't done anything wrong.
What helps most is knowing whether you're looking at a nightmare or a night terror. They happen in different stages of sleep and at different times of night, and they ask completely different things from you. Read it right and you'll know exactly what to do.
In the families we work with at Happy Day Play, these night wakings come up constantly, usually somewhere between the second and fifth birthday. They're frightening to witness and almost always harmless.
How nightmares and night terrors differ
The simplest way to tell them apart is to look at the clock and at your child.
A nightmare is a scary dream. Like most dreaming, it happens during REM sleep, which clusters in the second half of the night. Your child wakes up all the way, knows you're there and is genuinely frightened. They can often tell you what happened, at least as well as their words allow. The American Academy of Pediatrics notes that nightmares tend to track a child's developmental stage, so toddlers dream about separation while preschoolers dream about monsters and the dark.
A night terror is something else entirely. It happens during deep non-REM sleep, usually in the first part of the night, often 1 to 3 hours after your child falls asleep. Your child may bolt upright, scream, kick, sweat and breathe fast, with their eyes wide open. Even with their eyes open, they are not actually awake. They don't recognize you, they can't be comforted, and in the morning they won't remember any of it. According to the AAP, a night terror has no effect on the child at all. The only person it rattles is you.
What a nightmare looks like, and how to respond
Nightmares usually show up in the second half of the night and leave your child wide awake and scared. This is the age when imagination takes off. Around 2, children don't fully separate what's real from what's pretend, so the dragon from a bedtime story can feel completely real at midnight. Zero to Three points out that talking about the dream actually helps a child move through it, rather than making the fear worse.
Go to your child. Keep it simple and warm. You might say, "That was a scary dream. You're safe. I'm right here." Name the feeling, give a hug, and let them tell you as much or as little as they want. A nightlight, a favorite stuffed animal as a "protector" and a calm walk back to their own bed all help. If nightmares spike, take a look at the day, because a scary show, a big change or extra stress can all surface at night. Our piece on toddler screen time covers why what they watch before bed matters.
What a night terror looks like, and what to do
A night terror is loud, fast and alarming, and it usually strikes within a couple of hours of bedtime. Your child might thrash, scream or even leap out of bed, all while deeply asleep. Trying to wake them tends to make it last longer.
Your job here is different. The most helpful thing you can do is stay calm and keep your child safe. Clear anything they could bump into, and if they get up, gently steer them back toward the bed. The guidance from pediatric experts is consistent: don't try to wake them, and wait it out, because once the episode passes your child will usually drop right back into quiet sleep. Tell any babysitter or grandparent what a night terror is and what to do, so they don't panic either.
Why they happen, and what helps
No one knows exactly why some children get night terrors and others never do, and a lot of it comes down to temperament and a still-maturing sleep system. The biggest known trigger is being overtired. The AAP points to overtiredness as a common cause and recommends a regular bedtime that's early enough for real, full sleep. When sleep debt builds up, those deep-sleep stages get more intense, and that's when terrors are most likely.
A few things genuinely help:
Protect sleep: an overtired child has more night terrors, so guard bedtime and watch that your child is getting enough total sleep for their age.
Keep the wind-down predictable: the same calm steps in the same order tell a young nervous system it's safe to let go.
Bring your own calm: your steady presence is the strongest regulating tool in the room. Researchers at Harvard's Center on the Developing Child describe how responsive relationships with caring adults help buffer a child's stress. There's more on that in our guide to co-regulation.
Mind the inputs: scary or stimulating screens close to bedtime can feed nightmares, so keep the hour before sleep gentle.
Some families, together with their pediatrician, try a scheduled-waking approach for frequent night terrors. That one is worth doing with your doctor rather than on your own.
When to talk to your pediatrician about nightmares or night terrors
Most of the time, nightmares and night terrors are a phase that fades on its own. Some signs are worth a conversation with your child's doctor, though.
Episodes are frequent or long: terrors more than once a week, or ones that stretch on and on.
Days feel off too: your child is very sleepy, or seems sad, fearful or stressed during the day.
Breathing looks labored: snoring, gasping or pauses in breathing can point to a separate sleep issue.
Movements look like a seizure: stiffening, jerking or drooling during an episode.
Safety is a concern: your child runs, climbs or could get hurt mid-episode.
They don't fade with age: terrors that continue into the teen years, or start later.
Anything worries you: you know your child best, and "I just want to check" is always a good enough reason.
Think of this as general developmental information. Your pediatrician can look at the whole picture and put your mind at ease.
Nightmares and night terrors FAQs
Should I wake my child during a night terror?
It's best not to. Waking them tends to make the episode longer and more upsetting. Keep them safe, stay close and let it pass.
Will my child remember it?
After a night terror, your child almost never remembers. After a nightmare, they usually do, which is why they wake up wanting comfort.
Do night terrors mean something is wrong?
Usually they don't. They're common in early childhood, and most children simply outgrow them.
When do they stop?
Night terrors tend to fade by the teen years. Nightmares ease as your child's grip on what's real and what's pretend gets stronger.
Can I prevent them?
You can lower the odds by protecting sleep and keeping bedtime calm and consistent. You can't prevent every one, and that's okay.
Sitting with a screaming child at 3 a.m. is one of the lonelier parts of early parenting, even when nothing is actually wrong. The most useful thing you bring to it is a calm, steady presence, and that's a skill you can build. It's the same muscle we help grown-ups strengthen in our Grown-Up & Me classes, where the focus is as much on the adult as the child.
Key takeaways
- Nightmares happen in REM sleep in the second half of the night. Your child wakes up, remembers the dream and needs comfort.
- Night terrors happen in deep sleep early in the night. Your child looks terrified, stays deeply asleep, can't be consoled and won't remember it.
- They call for opposite responses: comfort your child through a nightmare, and simply keep them safe and calm through a terror without waking them.
- Both are a normal part of development and usually pass. Check with your pediatrician if episodes are frequent, involve breathing trouble or seizure-like movements, or worry you.
Sources & further reading 3
- American Academy of Pediatrics. (2022). Nightmares and Night Terrors. HealthyChildren.org. American Academy of Pediatrics
- Zero to Three. What Can I Do About My Toddler's Nightmares? Zero to Three
- Center on the Developing Child at Harvard University. Serve and Return. Harvard University
About this article
Every article on Happy Day Play is written by Kaitlynn Blyth herself, then checked against our published standards before it goes live. You can read exactly how we research, verify, and fact-check our work, and how we use and limit AI, in the policies below.
Last fact-checked June 20, 2026
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