What is it?

Subglottic stenosis refers to a narrowing of the part of the voice box below the vocal cords. Typically, we are born with 4 mm diameter subglottis, and if it’s under 3.5mm it is considered to be narrowed. Congenital subglottic stenosis is when a baby is born with this narrowing due to an incomplete formation of it before birth. Acquired subglottic stenosis happens due to trauma, infection, or intubation that may scar the tissue and cause narrowed airway.

12 Alikes with Stenosis of larynx

Learn from others
who are experiencing
Stenosis of larynx.

Additional names

This group contains additional names:
- Subglottic stenosis

Signs & symptoms

Symptoms may include high pitched noisy breathing (stridor) both during inhalation and exhalation, recurrent croup in childhood, poor weight gain, and difficulty breathing.


Diagnosis is based upon findings from medical history and physical examination. Further evaluation may include imaging tests and the diagnosis is confirmed with direct laryngoscopy or bronchoscopy, that can also tell the severity of the narrowing.


Treatment depends on the severity of the narrowing and symptoms. Sometimes, monitoring alone is sufficient, in other cases widening with balloon is considered and for severe cases, a surgical procedure is needed.

☝️ This is not a substitute for professional medical advice. Please consult with your physician before making any medical decision.

Learn more about our editorial process for content accuracy.

Alike Wisdom

Instantly get answers to medical questions with our AI, built from the collective wisdom of our community facing similar experiences

Thank you! Your submission has been received!

Find people who are
experiencing a similar
medical reality

100% Free