Noisy Breathing in Babies and Children: Stridor, Laryngomalacia and When to See ENT

Noisy breathing in a baby or child can be very worrying. Some noises are mild and improve with time. Others need specialist assessment because they may indicate a narrowing or abnormality of the upper airway.

The medical term for high-pitched noisy breathing is stridor. Stridor can occur when air passes through a narrowed area around the voice box, windpipe or upper airway. In babies, one common cause is laryngomalacia, sometimes described as a floppy voice box.

At Hampshire ENT Clinics, Miss Eleanor Sproson assesses babies and children with noisy breathing, stridor, laryngomalacia, airway symptoms and other complex paediatric ENT conditions.

Quick answer: when is noisy breathing urgent?

Seek urgent medical help if a child has difficulty breathing, blue lips, severe chest recession, poor feeding, pauses in breathing, lethargy, drooling, severe distress, rapidly worsening symptoms or noisy breathing after choking. Persistent or recurrent noisy breathing should be assessed by a paediatric ENT specialist.

What is stridor?

Stridor is a harsh or high-pitched breathing sound. It may be heard when breathing in, breathing out or both. Inspiratory stridor, which occurs when breathing in, often suggests narrowing around the voice box or upper airway.

Stridor is different from wheeze. Wheeze usually comes from the lower airways in the chest and is often associated with asthma or bronchiolitis. Parents may not be able to tell the difference, so assessment is important if symptoms persist or are concerning.

What is laryngomalacia?

Laryngomalacia is the most common cause of persistent noisy breathing in babies. It occurs when soft tissues above the vocal cords are floppy and fall inward during breathing. The noise is often worse when the baby is feeding, lying on their back, crying or excited.

Many babies with laryngomalacia are otherwise well and improve as they grow. Some, however, have feeding problems, poor weight gain, reflux symptoms or significant breathing difficulty and need closer assessment.

Other causes of noisy breathing

Noisy breathing can have several causes, including vocal cord movement problems, subglottic stenosis, airway cysts, tracheomalacia, nasal obstruction, choanal atresia, infection, reflux-related irritation, foreign body inhalation or congenital airway differences.

Because the causes vary from mild to serious, persistent stridor should not simply be dismissed as a normal baby noise.

What signs should parents look for?

Helpful observations include when the noise occurs, whether it is worse during feeding or sleep, whether the baby struggles to feed, whether there is vomiting or reflux, whether weight gain is normal, whether the chest pulls in during breathing, and whether there are colour changes or pauses in breathing.

Videos can be extremely helpful. A short recording of the breathing noise during typical symptoms can help the ENT consultant understand the pattern.

How is noisy breathing assessed?

Assessment starts with a detailed history and examination. In some children, flexible nasendoscopy or laryngoscopy may be used to look at the nose, throat and voice box. This is a small camera test that can often be performed in clinic in selected children.

More complex cases may require further airway assessment, imaging or examination under anaesthetic. Miss Sproson has specialist experience in paediatric airway conditions and complex children’s ENT, including laryngomalacia, subglottic stenosis, tracheomalacia and other causes of noisy breathing.

Does laryngomalacia need surgery?

Most babies with mild laryngomalacia do not need surgery and improve with time. Management may involve reassurance, feeding advice, monitoring growth and treating contributing reflux where appropriate.

Surgery is considered only for more severe cases, such as significant breathing difficulty, poor weight gain, oxygen problems or major feeding issues. The decision should be made by a specialist experienced in paediatric airway assessment.

Noisy breathing during sleep

Noisy breathing during sleep may be due to snoring, nasal obstruction, enlarged tonsils or adenoids rather than stridor. Pauses in breathing, gasping, restless sleep or daytime effects should prompt assessment for sleep-disordered breathing.

This is why the consultation should explore both daytime airway noise and night-time sleep symptoms.

When to book an appointment

Parents should arrange paediatric ENT assessment if noisy breathing is persistent, recurrent, worsening, associated with feeding difficulty, poor weight gain, sleep disturbance, voice change or repeated hospital attendances.

Hampshire ENT Clinics provides paediatric ENT assessment for babies, children and teenagers, with care led by Miss Eleanor Sproson.

Frequently asked questions

What is stridor?

Stridor is a noisy, often high-pitched breathing sound caused by airflow through a narrowed part of the upper airway.

Is stridor the same as wheeze?

No. Stridor usually comes from the upper airway around the voice box or windpipe. Wheeze usually comes from the lower airways in the chest.

What is laryngomalacia?

Laryngomalacia is a condition where floppy tissue above the vocal cords falls inward during breathing, causing noisy breathing in babies.

Will laryngomalacia get better by itself?

Many mild cases improve as the baby grows, but monitoring is important if feeding, growth or breathing is affected.

When is noisy breathing an emergency?

Urgent help is needed if there is severe breathing difficulty, blue lips, poor feeding, lethargy, drooling, choking, pauses in breathing or rapidly worsening symptoms.

Should I bring a video to the appointment?

Yes. Videos of the noisy breathing during feeding, sleep or crying can be very useful.

Can reflux make noisy breathing worse?

Reflux can irritate the airway and may worsen symptoms in some babies, although it is not the only cause of stridor.

Will my child need a camera test?

Some children need flexible nasendoscopy or laryngoscopy to assess the airway. Your consultant will explain whether this is appropriate.

Can enlarged tonsils cause noisy breathing?

They can cause snoring and obstructive breathing during sleep, but true stridor usually suggests a different upper airway source.

Who assesses paediatric airway symptoms at Hampshire ENT Clinics?

Miss Eleanor Sproson assesses babies and children with noisy breathing, stridor, laryngomalacia and other paediatric airway conditions.