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Patient ReportsLaryngomalacia: Symptoms, Causes, Diagnosis and Treatment
Written by Medicover Team and Medically Reviewed by Dr Shashi Kiran Somala , ENT
Table of Contents
Laryngomalacia is the most common congenital abnormality of the larynx (voice box) and is characterized by soft, floppy tissues above the vocal cords that collapse inward during breathing. It usually affects infants and often causes noisy breathing (stridor), especially during feeding, crying, or lying on the back. Most cases improve as the child grows, but severe cases may interfere with feeding or breathing. Early diagnosis and appropriate management are important to ensure healthy growth and prevent complications.
What are the Types of Laryngomalacia?
Laryngomalacia can be categorized into different types based on the severity and anatomical presentation. Understanding these types can help in assessing the condition and determining the appropriate management strategy.
Type 1: Mucosal Redundancy
This type is characterized by an excessive amount of soft tissue in the larynx, which can lead to partial airway obstruction. The redundant tissue typically collapses during inhalation, causing stridor.
Type 2: Short Aryepiglottic Folds
In Type 2 laryngomalacia, the aryepiglottic folds, which connect the side of the epiglottis to the larynx, are shorter than usual. This shortness pulls the epiglottis inward during inhalation, leading to airway narrowing and stridor.
Type 3: Posterior Collapse
Type 3 involves the collapse of the posterior (back) part of the larynx. This collapse is often more severe and can lead to significant airway obstruction, requiring closer monitoring and potentially surgical intervention.
What are the Symptoms of Laryngomalacia?
The hallmark symptom of laryngomalacia is stridor, a high-pitched, squeaky sound heard when the child inhales. The severity of symptoms can vary widely among affected infants. Common symptoms include:
- Stridor: This is most noticeable when the infant is feeding, crying, or lying on their back.
- Feeding Difficulties: Some infants may have trouble feeding due to airway obstruction.
- Poor Weight Gain: In severe cases, feeding difficulties can lead to inadequate weight gain.
- Recurrent Respiratory Infections: Frequent respiratory infections may occur due to the compromised airway.
- Cyanosis: In very severe cases, the infant may exhibit bluish discoloration of the skin due to lack of oxygen.
What are the Causes of Laryngomalacia?
The exact cause of laryngomalacia is not well understood, but it is believed to result from a combination of genetic and developmental factors. Some theories suggest that laryngomalacia may be due to immature neuromuscular control of the larynx, leading to floppy airway tissues.
Genetic Factors
There is some evidence to suggest that laryngomalacia may have a genetic component. A family history of airway anomalies or other congenital conditions may increase the likelihood of a child developing laryngomalacia.
Developmental Factors
Immaturity of the laryngeal structures at birth is a significant factor in laryngomalacia. As the child grows and the tissues mature, the condition often improves and resolves on its own.
When to See a Doctor for Laryngomalacia?
Infants with persistent noisy breathing, feeding difficulties, poor weight gain, or breathing problems should be evaluated by a Pediatrician or ENT Specialist. Early assessment helps determine whether monitoring or treatment is needed.
You should see a doctor if your baby has:
- Persistent noisy breathing.
- Difficulty feeding or frequent choking during feeds.
- Poor weight gain.
Seek emergency medical attention if your baby:
- Develops severe breathing difficulty.
- Has bluish lips or skin.
- Experiences repeated pauses in breathing or becomes difficult to wake.
These symptoms may indicate significant airway obstruction requiring urgent medical care.
How is Laryngomalacia Diagnosed?
Diagnosis of laryngomalacia usually involves a thorough clinical evaluation and may include several diagnostic tests to assess the condition and rule out other potential causes of stridor.
Clinical Evaluation
A pediatrician or an otolaryngologist (ENT specialist) will begin with a detailed medical history and physical examination. The characteristic stridulous sound and the absence of other concerning symptoms often point towards laryngomalacia.
Laryngoscopy
A flexible laryngoscopy is the definitive diagnostic test for laryngomalacia. This involves inserting a thin, flexible tube with a camera (laryngoscope) through the nose to visualize the larynx. This allows the physician to observe the movement of the laryngeal tissues during breathing and confirm the diagnosis.
Imaging Studies
In some cases, additional imaging studies such as X-rays or a barium swallow study may be performed to rule out other anatomical abnormalities or conditions that could contribute to airway obstruction.
What are the Treatment Options for Laryngomalacia?
The treatment approach for laryngomalacia depends on the severity of the symptoms and the impact on the child's overall health and development. Most cases of laryngomalacia are mild and resolve on their own without the need for intervention.
Conservative Management
For mild cases, conservative management is often sufficient. This includes:
- Monitoring: Regular follow-up appointments to monitor the child's growth and development.
- Positioning: Keeping the infant in an upright position during feeding and sleeping can help reduce airway obstruction.
- Feeding Modifications: Thickening feeds or using specialized feeding techniques to ensure adequate nutrition.
Medical Treatment
In some cases, medications may be prescribed to manage symptoms and improve the child's comfort.
- Anti-Reflux Medications: Since gastroesophageal reflux can exacerbate laryngomalacia symptoms, anti-reflux medications may be prescribed.
- Steroids: In certain cases, a short course of steroids may be used to reduce airway inflammation.
Surgical Intervention
For severe cases of laryngomalacia that do not respond to conservative management or medical treatment, surgical intervention may be necessary. The most common surgical procedure is supraglottoplasty, which involves removing or reshaping the excess tissue in the larynx to improve airway patency.
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What is the Recovery Process for Laryngomalacia?
Most infants outgrow laryngomalacia by 12 to 24 months as the laryngeal structures become firmer. Recovery after surgery is generally excellent, with significant improvement in breathing and feeding. Regular follow-up ensures healthy growth and monitors for any persistent airway problems. Parents should continue monitoring breathing, feeding, and weight gain throughout recovery.
Recovery Includes
- Regular follow-up with a pediatrician or pediatric ENT specialist.
- Monitoring feeding and weight gain.
- Managing associated gastroesophageal reflux if present.
- Following postoperative instructions after supraglottoplasty.
- Observing for worsening breathing symptoms.
- Routine developmental monitoring.
Frequently Asked Questions
1. What are the symptoms of laryngomalacia?
Symptoms include noisy breathing (stridor), especially during feeding or when the baby is lying down, and difficulty gaining weight.
2. How can laryngomalacia be prevented?
Laryngomalacia prevention isn't possible as it is a congenital condition, but managing symptoms with proper feeding techniques can help.
3. What are the Causes of Laryngomalacia?
Laryngomalacia is caused by the softening of the tissues above the vocal cords, leading to partial airway obstruction in infants.
4. How is laryngomalacia treated?
Mild cases often resolve on their own, while severe cases may require surgical intervention to prevent breathing difficulties or feeding issues.
5. When should parents worry about laryngomalacia in newborns?
If a newborn experiences significant feeding difficulties, failure to thrive, or severe breathing problems, medical attention is necessary.
