Stridor: When Breathing Becomes Noisy and Dangerous
That high-pitched sound when breathing isn't normal—it's your airway screaming for help. We assess and protect your airway immediately.
Stridor is ALWAYS a sign of airway obstruction. If you or your child has stridor, this requires immediate medical attention.
Important: Stridor Requires Immediate Attention
Stridor is a medical emergency that may indicate life-threatening airway obstruction. If you or someone else is experiencing stridor with breathing difficulty, seek emergency medical care immediately.
What is Stridor?
Stridor is a high-pitched, harsh breathing sound produced by turbulent airflow through a narrowed upper airway (above the trachea). Unlike wheeze (from lower airways), stridor is typically heard on inspiration and indicates potentially life-threatening obstruction of the larynx, epiglottis, or upper trachea. Stridor requires immediate evaluation to identify the cause and prevent complete airway obstruction.
Associated Symptoms
STRIDOR IS AN EMERGENCY. Go to the emergency room immediately or call emergency services.
Common Causes
Croup (Laryngotracheobronchitis)
40% (children)Viral infection causing subglottic swelling in children
Epiglottitis
15% (now rare with vaccination)Bacterial infection of epiglottis causing rapid swelling
Foreign Body Aspiration
20%Object blocking airway, usually in children
Allergic Reaction/Anaphylaxis
10%Severe swelling of airway from IgE-mediated reaction
Normal Airway Function
In a healthy individual, air flows silently through the upper airway (nose, pharynx, larynx) into the lower airways (trachea, bronchi). The airway diameter remains constant, allowing laminar (smooth) airflow. The vocal cords abduct (open) during breathing to allow free airflow. No abnormal sounds should be present during quiet breathing.
How Stridor Develops
Stridor occurs when air is forced through a narrowed segment of the upper airway. The narrowed diameter causes turbulent airflow, creating the characteristic high-pitched sound. The location of the obstruction determines when stridor is heard: laryngeal obstruction causes inspiratory stridor (worse on breathing in); subglottic or tracheal obstruction may cause biphasic stridor (heard on both inspiration and expiration). As obstruction worsens, breathing difficulty increases, eventually leading to respiratory distress and failure.
When to Seek Emergency Care
Call Emergency Services If:
- *Any stridor in a child
- *Stridor with breathing difficulty
- *Stridor with drooling (possible epiglottitis)
- *Blue lips or skin
- *Stridor after choking or suspected foreign body
Schedule Immediate Evaluation
- *New stridor in adults
- *Stridor with fever
- *Stridor with voice changes
IMMEDIATELY. Call emergency services or go to nearest emergency room. Do not wait.
Diagnostic Evaluation
Stridor evaluation must happen in emergency setting with airway monitoring.
Flexible Laryngoscopy
Visualize larynx and identify obstruction
Vocal cord position, epiglottis swelling, masses, foreign bodies
Neck X-ray
Assess for croup steeple sign or foreign body
Subglottic narrowing, radiopaque foreign bodies
CT Scan (if stable)
Detailed airway imaging
Complete airway anatomy, masses, abscesses
Treatment Approaches
Emergency treatment focuses on securing the airway and treating the cause.
Corticosteroids
Reduce airway swelling in croup
Epinephrine (Nebulized)
Rapid airway swelling reduction
Airway Intervention
Secure airway if obstruction severe
Treatment Timeline
Phase 1: Emergency Stabilization
ImmediateSecure airwayOxygen supportMedical treatment
Expected outcome: Patient stability
Phase 2: Cause Identification
Hours to DaysLaryngoscopyImagingIdentify underlying cause
Expected outcome: Specific diagnosis
Phase 3: Treatment & Prevention
WeeksTreat underlying causeAllergy management if allergicAvoidance education
Expected outcome: Prevention of recurrence
Frequently Asked Questions
What's the difference between stridor and wheeze?
Stridor is a high-pitched sound from the upper airway (larynx, throat) and is usually heard on inspiration. Wheeze is a musical sound from the lower airways (bronchi, lungs) and is heard on expiration. Stridor is always concerning; wheeze is common with asthma.
Can adults get stridor?
Yes, adults can develop stridor from tumors, vocal cord paralysis, severe allergic reactions, or airway infections. Stridor in adults is equally concerning and requires immediate evaluation.
Is stridor always an emergency?
YES. Stridor indicates significant airway obstruction that can rapidly become complete. Any stridor requires immediate medical evaluation, usually in an emergency department.
Need Immediate Evaluation?
Contact us immediately for urgent evaluation of stridor symptoms.
Healers Clinic | Phone: +971 56 274 1787 | Address: St. 15, Al Wasl Road, Jumeira 2, Dubai
Medical Disclaimer
This symptom guide is for informational purposes only. Stridor requires immediate medical evaluation. If you are experiencing breathing difficulty or stridor, please seek emergency medical care immediately.