Disclaimer: This article is for informational purposes only and isn’t intended to diagnose, treat, or replace professional medical advice. If your child experiences persistent snoring or symptoms of sleep apnoea, please speak to a qualified healthcare professional.
To mark Children’s Sleep Awareness Month, led by The Sleep Charity, this guide explains what snoring in children can mean, how it may affect sleep and development, and when it’s sensible to seek advice from a healthcare professional.
Snoring in children can be a common occurrence during colds, infections, or allergy flare-ups. In fact, research suggests that up to 28% of children snore occasionally1.
More regular snoring is less common. Around 3–12% of children snore habitually1, while a much smaller proportion, approximately 1–5%1, have obstructive sleep apnoea (OSA), a sleep-related breathing condition.
Age is also important to consider. In babies under one year, snoring caused by vibration of the airway during sleep is uncommon. Ongoing noisy breathing in an infant should be assessed by a healthcare professional.
If you’re ever unsure about your child’s breathing during sleep, you should always ask your GP for advice.
Snoring in children isn’t simply considered “normal” or “sleep apnoea” – it exists on a spectrum, and understanding where your child sits on that spectrum can help guide the appropriate next steps.
Occasional snoring
This happens infrequently, often during a cold, allergy flare-up, or when sleeping on the back. Breathing remains steady, and sleep is usually unaffected. Once the trigger settles, the snoring typically improves too.
Habitual snoring
Habitual snoring occurs three or more nights a week over weeks or months, even when a child seems otherwise well. While it doesn’t always mean obstructive sleep apnoea, it’s recognised as a possible indication of sleep-disordered breathing1.
Because of this, it’s less typical in children and may begin to interfere with restorative sleep, so it shouldn’t be overlooked.
Obstructive sleep apnoea
Obstructive sleep apnoea is less common but more significant. It occurs when the airway becomes partially or fully blocked during sleep, causing breathing to pause or become very shallow.
In children, enlarged tonsils or adenoids are the most common underlying cause. Obstructive sleep apnoea requires medical assessment and, in many cases, is very treatable.
Snoring happens when air doesn’t flow smoothly through the nose and throat during sleep. In children, this may be due to one factor – or sometimes a combination.
Enlarged tonsils or adenoids
Tonsils and adenoids are glands at the back of the throat and behind the nose. If they’re large or swollen, they can partly block the airway, making breathing noisy at night. This is one of the leading causes2 of snoring and obstructive sleep apnoea in young children.
It’s worth noting that many children naturally have larger tonsils between the ages of 3 and 83. In many cases, these shrink as a child gets older.
Colds or allergies
When a child has a cold or allergies, their nose can become congested with mucus, which restricts the flow of air in and out. This can force them into a mouth-breathing pattern, making snoring more likely.
Snoring linked to illness or allergic rhinitis, such as hay fever, usually improves once symptoms settle or allergies are better managed.
Facial structure
Some children have anatomical features that narrow the airway, such as a deviated septum, a small jaw, or a high-arched palate. In infants, a softer, more flexible airway (a condition known as laryngomalacia4) may occasionally contribute to unusual breathing sounds during sleep.
Weight and environmental factors
Children who are overweight have a higher risk of snoring and obstructive sleep apnoea5, as extra fatty tissue around the airway can make it narrower. Exposure to tobacco or vape smoke can also irritate and inflame airways, increasing the likelihood of snoring.
Occasionally, there are other factors that may increase the likelihood of obstructive sleep apnoea. These can include conditions such as Down syndrome, differences in jaw development, or having a relatively larger tongue6.
Often, more than one factor contributes to snoring in children. For example, a child with naturally larger tonsils may only snore when a cold further narrows the airway.
If your child snores frequently or loudly, their sleep may be affected.
It can help to look out for the following signs:
Many of these signs can have other explanations. However, when several occur alongside habitual snoring, it may indicate that sleep quality is being affected.
Occasional snoring usually doesn’t harm a child’s health. However, when snoring happens most nights, particularly if sleep apnoea is present, it can begin to affect sleep quality and overall health.
Sleep quality
When breathing is disrupted by snoring or apnoea episodes, sleep can become fragmented. A child may move repeatedly between lighter and deeper stages of sleep without getting enough restorative rest.
Over time, this can lead to ongoing sleep deprivation, even if they appear to spend a full 8 to 10 hours in bed. Some children seem tired and groggy, while others may appear unusually energetic, as overtiredness can sometimes present as increased activity rather than sleepiness.
Daytime functioning
Poor-quality sleep night after night can affect how a child functions during the day. Concentration, memory, and emotional regulation may be impacted9. Parents sometimes notice subtle changes before anything else – a shorter fuse, more frustration, or greater difficulty focusing.
Encouragingly, when sleep-related breathing problems are identified and treated, these difficulties often improve.
Physical health and growth
Sleep plays a vital role in physical development. It’s during deep sleep that the body releases growth hormone, strengthens the immune system, and supports ongoing development10.
In more severe untreated cases of sleep apnoea, long-term disruption to breathing during sleep has been linked to slowed growth in some children11, although this is uncommon.
Repeated drops in oxygen over time may also place strain on the cardiovascular system. Severe untreated sleep apnoea has been associated with raised blood pressure, although this remains rare12.
In most cases, the primary impact in children is fragmented and poor-quality sleep.
If your child’s snoring is mild or occasional, there are some simple steps you can try at home to help them sleep more comfortably. These aren’t a treatment for sleep apnoea, but they may help reduce mild snoring or complement advice from your GP.
Above all, notice patterns. Does snoring only happen during a cold or allergy season? Is it position-dependent? Keeping a simple sleep diary can help identify triggers and support conversations with a healthcare professional.
If your child snores loudly most nights, has pauses in breathing, shows ongoing daytime changes, or if something doesn’t feel quite right, speak to your GP.
Your doctor can check for common causes such as enlarged tonsils or adenoids and decide whether a referral to a paediatric ENT specialist is needed. If obstructive sleep apnoea is suspected, further assessment may be arranged. This can sometimes include an overnight sleep study to monitor breathing and oxygen levels during sleep.
Snoring that only occurs during a cold and settles once your child is well can usually be monitored and mentioned at a routine appointment. However, persistent snoring, particularly alongside breathing pauses, behavioural changes, or concerns about growth should be assessed sooner rather than later.
When you attend an appointment, it can help to:
Providing this fuller picture can support a clearer assessment and next steps.
Snoring in children is common and, in many cases, nothing to worry about. The key is recognising when it becomes frequent, loud or begins to disrupt sleep. Seeking advice is not overreacting. With reassurance or timely support, most sleep-related breathing problems can be effectively managed, helping your child return to healthy, restorative sleep.
References:
