Causes of Pediatric Stridor - Differential Diagnosis Algorithm

Present Since Infancy with No Respiratory Distress:

 • Laryngomalacia

Present Since Infancy with Respiratory Distress:

 • Laryngomalacia

 • Laryngeal Web

 • Hemangioma

 • Vocal Cord Dysfunction

 • Subglottic Stenosis

Non-Acute Onset:

 • Hemangioma

 • Vocal Cord Dysfunction

 • Subglottic Stenosis

 • Laryngeal Papillomatosis 

Acute Onset Febrile:

 • Peritonsillar / Retropharyngeal Abscess*

 • Epiglottitis*

 • Mononucleosis

 • Bacterial Tracheitis*

 • Croup

Barking Cough:

 • Croup

 • Atypical Croup

Partially-Treated Bacterial Tracheitis

Foreign Body



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