4 surprising triggers behind night terrors (and what to do about them)

If you’ve ever been woken by your child’s terrified screams, rushed to their room, and found them thrashing with their eyes wide open but completely unreachable, you’ll know just how frightening night terrors can be to witness.

You try to comfort them, hold them, speak softly. But nothing works. They look right through you, utterly inconsolable. And then, just as suddenly as it started, they settle back into peaceful sleep with no memory of what just happened.

I see exhausted parents in my clinic all the time who’ve been told, “Don’t worry, it’s normal. They’ll grow out of it.” And whilst it’s true that many children do eventually outgrow night terrors, that advice doesn’t help you right now.

Here’s what I’ve learned after years of working with families: night terrors aren’t random. They’re your child’s body telling you that something needs attention. And when we identify and address these underlying triggers, we can often reduce or even eliminate these frightening episodes altogether.

What’s Actually Happening During a Night Terror?

Night terrors happen during deep non-REM sleep, usually within the first few hours after your child falls asleep. During a night terror, your child’s brain gets caught between sleep stages. Part of their brain is trying to wake up (the primitive “fight or flight” part), whilst the rest remains in deep sleep.

This is very different from a nightmare. Nightmares happen during REM sleep (the dreaming stage), later in the night. Children wake up from nightmares, remember what scared them, and can be comforted. Night terrors are the opposite: your child stays asleep throughout, can’t be consoled, and won’t recall a thing.

The important thing to understand is that whilst night terrors look terrifying, your child is not in psychological distress. They’re caught in a sleep transition their brain simply can’t navigate smoothly, and there’s almost always a reason why.

The Root Causes No One Talks About

Most medical advice about night terrors focuses on reassurance: “They’re normal,” “Children will outgrow them,” “There’s nothing you can do.” In my clinic, I take a different approach. I want to know why this particular child is having night terrors right now. Because there’s almost always an underlying trigger, and when we address it, night terrors often improve dramatically or disappear altogether.

Iron Deficiency: The Sleep Disruptor Hiding in Plain Sight

This is one of the most significant causes of night terrors I see, and it’s something I check for in nearly every child with sleep disturbances.

Iron is essential for dopamine regulation. Dopamine helps your child’s brain smoothly transition between sleep stages. When iron is low, dopamine is disrupted, and children get “stuck” between deep sleep and lighter sleep, which is exactly the mechanism behind night terrors. Iron is also necessary for melatonin production, the hormone that regulates sleep-wake cycles.

Research shows that children with ferritin levels below 50 µg/L have significantly higher rates of night terrors, restless legs, and frequent waking.

Signs to look for include pale skin (especially on the tongue and inner eyelids), dark circles under the eyes, restless legs or lots of tossing and turning, low energy, picky eating, emotional meltdowns, and frequent night waking.

Ask your GP for a ferritin blood test, not just haemoglobin. Many doctors will say ferritin is “normal” above 15 or 20, but for optimal sleep and brain function in children, we’re looking for 50–100 µg/L. If your child’s ferritin is low, iron supplementation (under professional guidance) combined with iron-rich foods can make a dramatic difference within weeks.

Worms: The Unexpected Nighttime Culprit

This surprises many parents, but threadworms (pinworms) are one of the most common triggers for night terrors I see. Up to 40% of Australian children have an active threadworm infection at any given time, and most parents have no idea.

Around 1–3 hours after your child falls asleep, female threadworms migrate to lay their eggs, creating intense microscopic itching that disrupts deep sleep. Your child shifts into a lighter, more vulnerable sleep stage where night terrors occur. You might also notice teeth grinding, bedwetting, an itchy bottom, unexplained tummy pain, or waking around the same time each night.

If you suspect worms, you can do a simple sticky tape test at home first thing in the morning. Treating the whole family simultaneously with over-the-counter medication, combined with daily morning showers, hot washing of bedding, and thorough handwashing, breaks the reinfection cycle. For comprehensive guidance, I’ve written a detailed guide here.

When Being Too Tired Actually Makes Sleep Worse

This sounds counterintuitive, but being too tired is one of the most common triggers I see. When children are chronically overtired or have inconsistent sleep schedules, they crash harder into deep sleep instead of drifting gently. This intense descent increases the risk of incomplete arousal, the mechanism behind night terrors.

Common triggers include consistently late bedtimes, missing needed naps, irregular sleep schedules, recovering from illness, major life changes, and overstimulation before bed. Children aged 3-5 need 11-13 hours of total sleep in 24 hours, whilst school-aged children need 9-11 hours.

Try moving bedtime 15-30 minutes earlier. An earlier bedtime usually results in better quality sleep and fewer disturbances. If your child has dropped their nap but seems chronically tired or emotional, consider reinstating a quiet rest time or short 30-minute nap.

The Hidden Problem with Colourful “Kids’ Foods”

Artificial colours, preservatives, flavour enhancers like MSG, and high-sugar foods consumed close to bedtime can trigger night terrors by creating adrenaline surges, heart-rate spikes, and blood-sugar crashes during the night.

The foods marketed to children are often the worst offenders: brightly coloured yoghurts, ice blocks, breakfast cereals, lollies, soft drinks, and heavily processed snacks. I often tell parents to look at what their child ate in the afternoon and evening. Common additives to watch include artificial colours (102, 104, 110, 122, 123, 124, 127, 129, and annatto 160b), preservatives (the 200s, 210s, 220s), and flavour enhancers (MSG 620-625, hydrolysed vegetable protein).

The simplest approach? Focus on whole, unprocessed foods, especially before bed. Swap lollies for naturally sweet foods like dates or fresh fruit. Include protein and healthy fats in dinner to keep blood sugar stable. Something simple like apple slices with almond butter before bed can prevent blood-sugar dips during the night.

When a Blocked Nose Disrupts Everything

Children who can’t breathe easily through their nose are significantly more prone to night terrors. Mouth-breathing increases CO₂ loss, disrupts oxygen levels, and creates low-grade stress on the nervous system.

Children who can’t blow their nose properly often swallow mucus containing oral and sinus bacteria, which can ferment in the gut, causing inflammation that disrupts sleep. Common triggers include dust mite allergies, seasonal pollen, pet allergies, mould, chronic sinusitis, or enlarged adenoids.

Use saline nasal spray each night before bed to loosen mucus. If persistent congestion continues, request a RAST test from your GP to identify environmental allergens. Simple changes like dust-mite-proof bedding, HEPA air purifiers, and washing bedding weekly in hot water can help. If allergies are severe, ask for a referral to an ear, nose, and throat specialist.

Stress, Big Emotions, and Growing Brains

Children who are anxious, sensitive to change, or going through developmental transitions can discharge emotional tension through night terrors. The stress doesn’t have to be traumatic. Even positive changes like starting school, a new sibling, or moving house create neurological stress as the brain adapts.

I see this pattern often: a child starts preschool, seems fine during the day, but suddenly night terrors begin. Signs of overwhelm include increased clinginess, difficulty separating from parents, regression in behaviour, more meltdowns, anxious thoughts, or changes in appetite.

A calm, predictable wind-down routine signals to your child’s nervous system that it’s safe to relax. Include a warm bath with calming essential oils, quiet activities, connection time with cuddles, and talking about the day. Give your child outlets for emotions during waking hours through play, art, movement, or conversation. If anxiety is significant, consider working with a child psychologist.

Night terrors also have a strong genetic component. If you or your partner experienced them as children, your child is more likely to have them too. But genetics aren’t destiny. Even with a family history, addressing triggers like iron deficiency or over-tiredness can significantly reduce episodes.

What to Do When a Night Terror Happens

First things first, don’t try to wake your child, this usually doesn’t work and can prolong the episode. When your child is in the middle of a night terror, your instinct is to wake them up or comfort them, but the most helpful thing you can do is stay calm and keep them safe.

Stay close and gently guide them away from furniture or stairs if they’re moving around. Speak softly and calmly, saying things like, “You’re safe. Mummy’s here (or daddy/nanny/poppy etc). Everything is okay.” Turn on a dim light to reduce confusion.

Most night terrors last 5-15 minutes. Your child will eventually calm down and return to peaceful sleep on their own. And please, don’t mention it in the morning. Since children rarely remember, bringing it up can create unnecessary worry.

When to Seek Additional Support

Most night terrors resolve with these approaches. But consult your GP or a paediatric sleep specialist if night terrors last longer than 15-20 minutes, happen multiple times per night or several nights per week, or your child seems excessively tired during the day.

If episodes are accompanied by snoring, breathing pauses, or gasping (possible sleep apnoea), or if your child shows seizure-like activity (stiffening, jerking, drooling), these warrant medical assessment. Similarly, if night terrors continue beyond age 12 or there are signs of significant anxiety or trauma, professional support becomes important.

The Root Cause Approach

In naturopathic medicine, we don’t just look at symptoms in isolation. Night terrors are your child’s body telling you something needs attention, whether that’s a nutrient deficiency, a parasitic infection, environmental triggers, or emotional overwhelm.

When we address these root causes, we’re not just eliminating night terrors, we’re building a foundation for better sleep, improved immunity, balanced moods, and long-term health.

Every child is unique, which is why I offer personalised consultations where I take a thorough health history, review relevant testing, and create an individualised treatment plan. Sometimes it’s as simple as iron supplementation. Other times, we need to look deeper at gut health, immune function, or nervous system support.

References:

1. Mindell JA, et al. Sleep disorders in children. Nat Sci Sleep.
2. Picchietti DL, et al. Iron deficiency and sleep disturbances in children. Sleep Med.
3. Leung AK, et al. Pinworm infection in children. Curr Infect Dis Rep.
4. Royal Children’s Hospital Melbourne – Night terrors guideline.
5. Goh DYT, et al. Sleep and environmental allergies in children. Pediatrics.
6. Food additives and behavioural effects. Lancet.