Just before 11 p.m., a scream comes from your child's room, a scream unlike anything you have ever heard from them. They are sitting bolt upright in bed, eyes wide open, drenched in sweat, thrashing about – and not responding to you at all. Ten minutes later they lie back down and go on sleeping as if nothing had happened. In the morning they remember nothing. Night terrors in children are among the experiences that frighten parents the most, and at the same time one of the most harmless sleep phenomena of childhood. Here you will learn what happens in the brain during an episode, how to tell a night terror from a nightmare, how to react correctly and how to reduce how often they occur.
The short answer: a night terror (pavor nocturnus) is an incomplete awakening from deep sleep, usually one to three hours after falling asleep. The child screams, appears panicked and cannot be reached, but is not dreaming and will not remember it in the morning. Reacting correctly means: do not wake them, do not hold them down, stay calmly nearby, prevent injury and wait the episode out. The most important trigger is lack of sleep; enough sleep and fixed bedtimes noticeably reduce the frequency. The vast majority of children grow out of night terrors by school age.
- A night terror is not a nightmare: the child is not dreaming, not suffering and will not remember it.
- Typical: first half of the night, lasting 1 to 15 minutes, screaming, sweating, wide-open eyes, no response when spoken to.
- Do not wake, do not restrain, just keep them safe and wait; do not make a drama of it in the morning.
- Most common triggers: lack of sleep, irregular bedtimes, fever, excitement, a full bladder, family predisposition.
- See your paediatrician if episodes are very frequent or long, if your child gets injured, snores, or if night terrors first appear after the age of 10.
What is a night terror in children?
The night terror, known medically as pavor nocturnus, belongs to the so-called disorders of arousal from deep sleep, together with sleepwalking and confusional arousals. During an episode, the brain does not switch cleanly from deep sleep into a lighter sleep stage but gets stuck in an in-between state: the areas that control movement, heartbeat and startle responses are active, while consciousness carries on sleeping. So the child can sit up, scream, flail about and even get up – and still not be awake.
Because there is hardly any dreaming in deep sleep, the child experiences nothing frightening during the episode. Screaming, sweating, a racing pulse and dilated pupils are a physical alarm response of the nervous system, not fear in the true sense. That explains why children immediately go back to sleep afterwards and remember nothing in the morning. A night terror is far worse for the parents watching than for the child. That is not a platitude meant to comfort you; it is the very core of the phenomenon and the basis for reacting the right way.
Night terror or nightmare? The differences at a glance
Night terrors and nightmares differ in almost every respect, above all in their timing and in whether your child is aware of you. A child having a nightmare is awake and looking for comfort; a child in a night terror looks straight through you and often fights off any touch.
| Feature | Night terror | Nightmare |
|---|---|---|
| Timing | First half of the night, 1–3 hours after falling asleep | Second half of the night, towards morning |
| Sleep stage | Deep sleep | Dream sleep (REM) |
| State | Not awake, unresponsive | Awake, oriented, responsive |
| Reaction to parents | Does not notice you, often fights you off | Seeks comfort and closeness |
| Behaviour | Loud screaming, sweating, thrashing, fixed stare | Crying, calling out, talks about the dream |
| Duration | 1–15 minutes, then straight back to sleep | Short, but often awake for a long time afterwards |
| Memory in the morning | None | Often detailed |
| Right response | Do not wake, keep safe, wait | Comfort, reassure, let them stay in bed |
If you are unsure, note down the time, the duration and the behaviour. After two or three episodes you will usually recognise the pattern quite clearly.
How common are night terrors and at what age do they occur?
Night terrors are common in the preschool years. They occur most frequently between around 3 and 6 years of age, but can already appear in toddlers from about 18 months and occasionally still in primary-school children. A large proportion of all children experience at least one episode, many only a few times, some several times a week over months. As the sleep system matures, the episodes disappear on their own in the vast majority of children, usually by school age and at the latest by puberty.
What stands out is how often night terrors run in families: if one parent had night terrors or sleepwalking as a child, the likelihood is higher in their own child. Ask the grandparents whether you yourself used to "roar" at night as a child; the answer surprises many people. You cannot influence this predisposition, but it explains why siblings are often affected differently. Importantly, night terrors are not a sign of an emotional problem or of mistakes in parenting; they are a maturation phenomenon of the brain that passes with time.
What triggers a night terror?
A night terror occurs when deep sleep is unusually deep or the transition out of it is disrupted. Anything that intensifies deep sleep or fragments sleep therefore increases the likelihood:
- Lack of sleep and overtiredness. By far the most important trigger. After a short night or a missed nap, the body catches up on an especially large amount of deep sleep. You can see how much sleep your child needs in our age-by-age guide to sleep needs.
- Irregular bedtimes. Holidays, late weekends, the clocks changing or a new childcare routine throw the sleep architecture into disarray.
- Fever and infections. A raised body temperature changes sleep; many parents experience the first night terror during a cold.
- Excitement and stress. A birthday party, the first day at kindergarten, a house move or an exciting film in the evening.
- A full bladder. The urge to urinate during deep sleep is a known trigger, especially in children who are just becoming dry at night.
- Noises and disturbances. A sibling coming into the room, a ringing phone, a light being switched on.
- Predisposition. Night terrors and sleepwalking tend to run in families.
Usually several factors come together: the overtired child who went to bed late on Sunday and is coming down with a cold is the classic case.
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How to react to a night terror: step by step
The impulse to wake and comfort your child is understandable, and with a nightmare it is exactly right. With a night terror it achieves the opposite: the episode lasts longer, and a half-woken child is confused and then genuinely frightened. Do this instead:
- Stay calm. Your child is not experiencing anything bad. Your pulse may race; your voice should not.
- Do not wake them. No shaking, no loud calling, no bright light, no cold water.
- Keep them safe. Move away any objects the child could bump into and place yourself between the child and the edge of the bed. If they are flailing, do not hold them down; guide them gently.
- Be there quietly. A calm sentence such as "I'm here, everything is fine" does no harm, even if the child does not respond. If they allow touch, place a hand on their back; if they fight it off, take it away.
- Wait. After 1 to 15 minutes the tension subsides, the child lies down or lets you lay them down, and goes back to sleep.
- Do not discuss it afterwards. Tuck them in and go back to bed yourself. In the morning, do not bring the subject up; the child experienced nothing and would only worry.
If your child gets up, calmly guide them back to bed without waking them. As with sleepwalking: guide, do not restrain.
Common mistakes and myths: a fact check
"My child has to be woken, otherwise they will suffer." Wrong. The child does not suffer, because they are not consciously experiencing what is happening. Waking them prolongs the episode and creates the very fear you want to prevent.
"A night terror means something bad has happened." Night terrors are a maturation phenomenon of sleep, not an indication of trauma or emotional problems. Upsetting events can make episodes more likely, like any kind of excitement, but they are rarely the cause.
"I should talk to my child about it the next day." Better not. A child who learns that they screamed and thrashed about in the night becomes afraid of falling asleep. That stress can encourage further episodes.
"It helps to put the child to bed later so they sleep more deeply." The exact opposite is true: lack of sleep intensifies deep sleep and is the main trigger. Earlier to bed, not later.
Prevention: the 14-day plan against frequent night terrors
Night terrors cannot be prevented entirely, but in most children the frequency drops noticeably if you work consistently on the amount of sleep and the routine for two weeks.
- Days 1–3: keep a log. Note bedtime, nap, wake-up time, and the time and duration of every episode. This is how you find the typical time window.
- Days 4–7: extend sleep. Put your child to bed 30 minutes earlier than before and stick to that time at weekends too. For children under four, make sure the nap is not skipped. A bedtime ritual that is always the same, as in our bedtime routine from age 2, helps you stick to it.
- Days 8–14: remove triggers. A trip to the toilet right before sleep, no screens in the last hour, no wild games after dinner, siblings and pets out of the room.
- Optional from day 8: scheduled waking. If the episodes occur almost every night at the same time, some paediatricians recommend briefly waking the child about 15 to 30 minutes before the usual time, until they open their eyes or mumble, and then letting them go back to sleep. Over one to two weeks this breaks the pattern in many children. Discuss the approach with your paediatrician beforehand.
After two weeks, compare your log: in most families the episodes decrease significantly. If your child remains overtired, it is worth looking at the reasons in our article Child won't fall asleep.
Safety in the bedroom during an episode
The only real risk in a night terror is injury, because the child thrashes about uncontrollably, falls out of bed or gets up. A few precautions largely remove this risk. The bed should have no hard edges or corners at head height; a padded, softly shaped rim absorbs movements without the child hurting themselves. A low entry height shortens the fall if the child does roll out. Lamps with glass shades and small parts should be out of reach. For children who get up during an episode, secure windows with child locks and the stairs with a gate. A rug beside the bed cushions, a tidy floor prevents tripping. You can find more on safe furnishing in our article Furnishing a bedroom for 2–5-year-olds.
When you should talk to your paediatrician
In the vast majority of cases night terrors are harmless and need no treatment. Nevertheless, talk to your paediatrician if the episodes occur several times a week over a longer period, regularly last longer than 20 to 30 minutes or happen several times a night. Likewise if your child injures themselves during an episode, leaves the room or the flat, if night terrors first appear after the age of ten, or if your child is noticeably tired, unfocused or irritable during the day. You should also have things checked if your child snores loudly or has pauses in breathing, because breathing disorders during sleep can encourage disorders of arousal, and if the episodes are accompanied by stiffening, twitching or bedwetting. Take your log with you; times, durations and behaviour help the professional to assess the situation.
Frequently asked questions about night terrors
Does my child suffer during a night terror?
No. The child is in an in-between state of deep sleep and wakefulness, is not dreaming and is not consciously aware of the situation. The intense reaction is a physical alarm response, not fear that is actually experienced.
Should I wake my child during a night terror?
No. Waking usually prolongs the episode and leaves the child confused and then genuinely frightened. Stay calmly nearby, make sure they do not hurt themselves and wait until they lie back down on their own.
How long does a night terror last?
Usually between 1 and 15 minutes, after which the child goes straight back to sleep. If the episodes regularly last longer than 20 to 30 minutes or occur several times a night, discuss this with your paediatrician.
At what age do night terrors stop?
Most children grow out of night terrors by school age, at the latest by puberty. As the sleep system matures, the episodes become rarer and then disappear altogether.
Can I prevent night terrors?
Not completely, but you can reduce the frequency significantly: enough sleep, fixed bedtimes at weekends too, a trip to the toilet before sleep and a calm evening without screens. With almost daily episodes, scheduled waking can help; agree on it with your paediatrician.
Are night terrors a sign of an emotional problem?
No. Night terrors are a maturation phenomenon of children's sleep and tend to run in families. Excitement and stress can make episodes more likely but are rarely the cause. There is no trauma or parenting mistake behind them.
This article is for general information only and does not replace paediatric advice. If problems persist, please consult your paediatrician.
