Snoring Or Noisy Breathing In Children

Snoring Or Noisy Breathing In Children

Snoring or noisy breathing during sleep may be a sign that your child is having difficulty breathing. The medical name for this is obstructive sleep apnoea.


Key points about snoring or noisy breathing

  • it's not normal for children to snore
  • snoring or noisy breathing may mean your child has obstructive sleep apnoea (OSA)
  • OSA is a medical condition - narrowed breathing passages make breathing more difficult during sleep
  • snoring can have long-term effects on sleep quality, behaviour and learning
  • enlarged tonsils and adenoids are an important cause of OSA, and an operation to remove them can fix the problem
  • overweight children are at greater risk of OSA

What is snoring or noisy breathing?

It is normal for children to sometimes make noises with breathing during sleep. It's not normal for children to snore unless they are unwell with a cold.

Noisy breathing can come from the nose or from an open mouth. It can be worse when your child is sleeping on their back. If you notice snoring or noisy breathing often during your child's sleep, talk to your family doctor. It might be a sign of a condition called obstructive sleep apnoea (OSA).

What is obstructive sleep apnoea?

Narrowed breathing passages make breathing more difficult during sleep

When someone falls asleep, the muscles of the throat relax and the breathing passages at the back of the nose and in the throat become narrower. In children, the tonsils and adenoids can grow to be quite large, and less air gets through the breathing passages during sleep. When this happens, you may notice snoring or noisy breathing.

Snoring is more common during some phases of sleep

There are some times during sleep when the muscles are more relaxed. Snoring is more common during these phases of sleep. This is why snoring can be more common in the second half of the night.

Snoring needs checking

Snoring is not always a very serious problem for children - about 15 to 20 in 100 children snore. But, it is a symptom that needs checking by your family doctor as 2 to 5 in 100 children have OSA.

Reasons for OSA

In children, the most common reason for OSA is enlarged tonsils and adenoids. In older children and teens, being overweight is a common reason. Any medical condition that affects the size and shape of your child's breathing passages can also make OSA more likely.

The photo below shows enlarged tonsils in a child who has OSA.

An open mouth showing enlarged tonsils

What problems can obstuctive sleep apnoea cause?

In OSA, the narrowing of the breathing passages at the back of the nose and in the throat during sleep is enough to cause breathing difficulty or pauses in breathing. A child wakes up briefly because they cannot breathe properly, often with a loud gasp or snort. These episodes can happen many times through the night and the disturbed sleep can result in changes in behaviour during the day such as:

  • poor attention and lack of concentration
  • hyperactive behaviour
  • seeming 'fragile' or 'oversensitive' or 'overtired' or 'grumpy'
  • being impulsive (tending to act without thinking)
  • difficulty learning at school because of issues with concentration
  • sleepiness (but this is more common in teens and adults than children)

Severe OSA can cause high blood pressure and put strain on the heart. This is not as common in children as in adults but it is something your doctor will look for.

How can I tell if my child might have obstructive sleep apnoea?

Signs of possible OSA in a child who snores include:

  • restlessness during sleep (moving around the bed a lot)
  • short pauses in breathing - the chest is moving but no air is moving through the nose and mouth
  • needing to make more effort to breathe
  • sweating during sleep
  • mouth breathing when asleep or awake - the passage to the nose may be completely blocked
  • daytime behaviour issues (see the section above)

Watch a video of a child with severe OSA. You can see his chest sucking in with each breath. The noises you can hear are because his breathing passages are partly blocked.

What should I do if I think my child has obstructive sleep apnoea?

If you are worried that your child may have OSA, take them to your family doctor. Your doctor will examine your child and may recommend your child sees either:

  • an ear, nose and throat surgeon if your doctor thinks the tonsils and adenoids are causing the problem
  • a paediatrician (a doctor who treats children)

The doctor will want to know all about your child's sleep patterns. They will examine your child's breathing passages by looking into their mouth and nose. It can be very helpful for you take a video (on your phone) of your child sleeping. Try to film the breathing pattern you are most concerned about so that you can show this to your doctor.

Your child may not need any further investigations if it's clear your child has OSA.

For some children, the doctor may recommend your child has an overnight oximetry test or a sleep test (polysomnography).

Read more about oximetry

Read more about polysomnography

What is the treatment for obstructive sleep apnoea?

The treatment for OSA depends on its cause. The most common treatment is removing the tonsils or adenoids (or both tonsils and adenoids) to open up the breathing passages.

Children who have this surgery need to go back to the doctor 6 to 8 weeks after their surgery. The doctor will check that their symptoms are better.

Read more about tonsillectomy and adenotonsillectomy

Removing tonsils or adenoids (or both) can fix OSA. Some children keep having symptoms after surgery. This is more common in overweight children.

If surgery is not recommended for your child, or if your child keeps having symptoms after removal of their tonsils or adenoids (or both), they may need further tests. They might need an overnight oximetry test or a sleep test (polysomnography). See the links to information about oximetry and sleep tests (polysomnography) in the section above.

Some children will need further treatment such as:

  • a weight management programme
  • treatment to help with breathing during sleep - such as CPAP (continuous positive airway pressure)
  • more surgery

Read more about CPAP (continuous positive airway pressure)

See more KidsHealth content on sleep

Check all KidsHealth's content on sleep

Screenshot of sleep section of KidsHealth website


Thank you to Dr Murali Mahadevan for providing the photo of enlarged tonsils from his personal collection.

This page last reviewed 28 July 2022.

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