Stridor in Children
What is stridor?
Stridor is a noisy or high-pitched sound with breathing. It is a sign that the upper
airway is partially blocked. It may involve the nose, mouth, sinuses, voice box (larynx),
or windpipe (trachea).
What causes stridor?
Stridor can be caused by many things. The following are some of the more common causes
of stridor in children:
- Defects in the child’s nose and throat, larynx, or trachea that the child was born
- Infections such as croup, epiglottitis, or tonsillitis, and abscesses in the back
of the throat
- Swallowing toxic substances
- Swallowing pieces of food or small objects that get caught in the upper airway
- Injuries to the jaw or neck
Other conditions may also cause stridor. For example, problems with the brain may
interfere with normal breathing. Or an allergic reaction may cause swelling of the
airways. And tumors may also block the airways.
Who is at risk for stridor?
The upper airway in a child is shorter and narrower than that of an adult. Because
of this, a child is more likely to have problems with blockage of the airway.
What are the symptoms of stridor?
The main symptom of stridor is the noise that is heard while your child breathes.
The sound of stridor depends on where the blockage is in your child’s upper respiratory
If your child has stridor that comes back, he or she may have trouble eating and drinking,
and poor weight gain.
How is stridor diagnosed?
The healthcare provider will ask about your child’s symptoms and health history. He
or she will give your child a physical exam. The provider may refer you to an ear,
nose, and throat specialist (ENT).
If your child has stridor, the healthcare provider may order tests to find the cause.
The tests may include:
- X-rays. X-rays of the chest and neck may be done.
- CT scan or MRI. These are more detailed studies of the internal organs. Your child may need these
so the ENT can look at the anatomy of the chest and neck.
- Laryngoscopy. A special instrument is used to check the back of the throat and larynx.
- Bronchoscopy. A special instrument is used to check the throat, larynx, trachea, and tubes leading
into the lungs (bronchi).
- Spirometry. This is an easy test that checks how much air is breathed in and out. It also measures
how quickly the air is breathed out. It is difficult to test young children with spirometry.
- Pulse oximetry. An oximeter is a small tool that measures the amount of oxygen in the blood. A small
sensor is placed on a finger or toe. When the machine is on, a small red light can
be seen in the sensor. The sensor is painless, and the red light does not get hot.
- Sputum culture. A sample of the material (sputum) that is coughed up from the lungs is sent to the
lab to check for infection.
How is stridor treated?
Treatment will depend on your child’s symptoms, age, and general health. It will also
depend on how severe the condition is.
Your child’s healthcare provider may simply watch and recheck your child for certain
conditions that cause stridor. Treatment may include:
- Referral to an ear, nose, and throat specialist (ENT)
- Surgery, if the stridor is severe
- Medicines by mouth or shots to help decrease the swelling in the airways or treat
- Hospital stay and emergency surgery, depending on how severe the stridor is
What are the complications of stridor?
If left untreated, stridor can block the child’s airway. This can be life-threatening
or even cause death.
When should I call my child’s healthcare provider?
Call your child’s healthcare provider if your child makes a noisy or high-pitched
sound while breathing.
Call 911 or get medical help right away if your child has signs or symptoms of severe blockage
of the airway. These signs may include:
- Gasping for air, choking
- Nostrils widening when breathing
- Sinking in of the areas between the ribs when breathing
- Change in behavior
- Bluish-colored skin
- Loss of consciousness
Key points about stridor
- Stridor is a noisy or high-pitched sound with breathing.
- It is usually caused by a blockage or narrowing in your child’s upper airway.
- Some common causes of stridor in children are infections and defects in the child’s
nose, throat, larynx, or trachea that the child was born with.
- The sound of stridor depends on where the blockage is in the upper respiratory tract.
- Stridor is usually diagnosed based on health history and a physical exam.
- The child may need a hospital stay and emergency surgery, depending on how severe
the stridor is.
- If left untreated, stridor can block the child’s airway. This can be life-threatening
or even cause death.
Tips to help you get the most from a visit to your child’s healthcare provider:
- Before your visit, write down questions you want answered.
- At the visit, write down the names of new medicines, treatments, or tests, and any
new instructions your provider gives you for your child.
- If your child has a follow-up appointment, write down the date, time, and purpose
for that visit.
- Know how you can contact your child’s provider after office hours. This is important
if your child becomes ill and you have questions or need advice.