Night Terrors: Why You Must Not Wake Them

Ninety minutes after your child falls asleep, they sit up and scream. Their eyes are wide open. They are sweating, their heart is racing, they may thrash or try to get out of bed — and when you take hold of them and say their name, they look straight through you as though you are not there.

Then, after a few minutes, they lie down and sleep. In the morning they remember nothing at all, and are puzzled that you look so tired.

Parents describe this as one of the most frightening things they have witnessed. Almost every instinct it produces — wake them, hold them, ask what is wrong — makes it worse.

This is not a nightmare

The distinction is the whole thing, because the two need opposite responses.

A nightmare is a dream. It happens later in the night, your child wakes up properly, they are frightened of something, they want you, and they can usually tell you about it — sometimes for weeks afterwards.

A night terror is not a dream at all. It happens in the first few hours of sleep, during deep non-dreaming sleep, and your child is not awake. Part of the brain is in deep sleep while part has surfaced — which is why the eyes are open and the body is doing all the things fear does, while the person is not there to be comforted.

The practical consequences follow directly:

• They will not respond to you, because they cannot hear you.
• Comfort does not work, and often makes the thrashing worse.
• They remember nothing afterwards — so there is nothing to talk about in the morning.
• It is far more distressing for you than for them. That is the sentence most parents need, and it is true.

How common is this

Much more common than most families realise, which is itself reassuring.

A longitudinal study published in JAMA Pediatrics followed 1,940 children from the Quebec Longitudinal Study of Child Development, with sleep assessed every year from toddlerhood to age 13. The peak prevalence of sleep terrors was at 18 months, affecting 34.4% of children — better than one child in three.

A separate cohort study in the Journal of Clinical Sleep Medicine found the frequency stayed relatively stable across early childhood, between 16.7% and 20.5%.

The same JAMA study also found this runs strongly in families. Childhood sleepwalking occurred in 22.5% of children with no parental history of sleepwalking, rising to 47.4% where a parent had sleepwalked. So if you or your partner did this as a child, that is the likely explanation — and worth mentioning to your doctor.

One more finding worth knowing: about a third of children who had early sleep terrors went on to sleepwalk later in childhood. The two belong to the same family of sleep events.

What to do during one

Do

• Stay in the room and stay quiet. Your job is safety, not comfort.
• Make the space safe — move furniture and anything hard, and make sure they cannot reach stairs, a window or the roof stairs.
• Guide them gently back to bed if they get up, without waking them.
• Wait. Most last a few minutes and end on their own.
• Note the time it happened. This matters for the technique below.

Do not

• Do not wake them. A child dragged out of deep sleep mid-terror is usually confused, frightened and much harder to settle — and it can extend the whole episode. This is the single most important thing on the page.
• Do not restrain or hold them tightly unless they are in danger. Being held increases the thrashing.
• Do not shout, shake, or splash water.
• Do not ask them about it in the morning. They have no memory of it, and being told they screamed in the night can create a fear of going to bed that did not exist before.

What actually reduces them

Night terrors are triggered by anything that deepens or disrupts early-night sleep. Most families can cut the frequency substantially without any treatment at all.

1. More sleep, not less. This is counter-intuitive and it is the biggest lever. Overtiredness deepens early-night sleep and makes terrors more likely, so an earlier bedtime often reduces them.
2. A consistent bedtime, including at weekends. Irregular timing is a trigger in its own right.
3. Do not drop the nap too early in a child who still needs it.
4. Empty the bladder before bed. A full bladder is a common trigger.
5. Deal with anything disrupting sleep — snoring or mouth-breathing especially, which is worth raising with a doctor, plus itching, reflux or a room that is too hot.
6. Reduce stress and over-stimulation in the evening, and keep a calm hour before bed.
7. Scheduled awakening. If the terrors happen at a predictable time, some families wake the child fully but briefly about 15 minutes beforehand, for a week or two — the aim is to interrupt the sleep cycle before the terror starts. Ask your doctor before trying this; it is not the same as waking them during one, which you should never do.

What it is not

Two fears worth answering directly, because parents carry both silently.

It does not mean your child is traumatised, or that something has happened to them. Night terrors are a sleep phenomenon of a maturing nervous system, they run in families, and they are commonest in perfectly happy toddlers. They are not a coded message.

It is not a seizure — but the two can look similar, which is why the section below exists.

There is one honest nuance. The cohort study above found the frequency of sleep terrors in early childhood was associated with more emotional and behavioural problems at ages four and five, particularly internalising problems, after controlling for confounders. That is an association in a group, not a prediction about your child, and it does not establish that one causes the other. What it reasonably supports is mentioning frequent terrors to your doctor alongside anything else you have noticed — not lying awake worrying about it.

When to see a doctor

• Episodes that are stiff, rhythmic or jerking rather than agitated and thrashing
• Anything that looks the same every time, in a stereotyped way
• Episodes happening several times a night, or continuing into later childhood and the teenage years
• Any daytime episodes of the same kind — see absence seizures and inattention
• Your child is sleepy or confused for a long time afterwards, or wets themselves during one
• Snoring, mouth-breathing or pauses in breathing — treating an airway problem sometimes ends the terrors entirely
• Injury, or a real risk of it — leaving the house, stairs, windows
• Your child is exhausted by day, which suggests sleep is being disrupted more broadly

If the episodes involve holding the breath and going blue or white rather than screaming, that is a different thing again — see breath-holding spells.

If your child grinds their teeth in their sleep as well, that is a separate and much more common thing — see teeth grinding at night.

Rhythmic rocking or head banging as your child falls asleep is a different sleep phenomenon again — see head banging.

Tell everyone who looks after your child

Anyone who might be there for one — grandparents, an older sibling, a relative during a stay, a school trip — should know that it happens, that it stops on its own, that they must not wake the child, and that the job is only to keep them safe.

An adult who has never seen one will almost certainly try to wake the child, because that is what everybody does. Written down in four lines, kept somewhere findable, saves a frightening night.

Where we fit

Night terrors themselves are not our territory: they are a sleep phenomenon, most children grow out of them, and where they need medical attention it is a doctor's job.

Where we do help is the sleep around them — the bedtime that is not holding, the child who cannot settle without an hour of resistance, the sensory reasons a particular bed is intolerable, and the over-tiredness that is making the terrors more frequent in the first place. That is ordinary work and it is often the whole answer. Our guide to better sleep and sleep home program start there, and our page on melatonin covers what that does and does not do.

A consultation is Rs 1,500 and lasts up to 50 minutes, we work in Urdu or English, and you do not need a referral.

Sources

• Petit D, Pennestri M-H, Paquet J, et al. Childhood Sleepwalking and Sleep Terrors: A Longitudinal Study of Prevalence and Familial Aggregation. JAMA Pediatrics. PubMed 25938617
• Laganière C, Gaudreau H, Pokhvisneva I, et al. Sleep terrors in early childhood and associated emotional-behavioral problems. Journal of Clinical Sleep Medicine. PubMed 35686369