Inspiratory Stridor in Pediatrics — Case | Allergy & Immunology | SMLE Q#9021

SMLE Question #9021

Pediatrics Allergy & Immunology

Objective: OBJ-PED-ALLERGY-ANAPHYLAXIS-VACCINE

Last updated: February 2026
A previously healthy 4-year-old boy develops sudden difficulty breathing, lip swelling, and a rapidly spreading pruritic rash minutes after eating cake and snacks at a birthday party. Examination shows marked upper airway swelling with inspiratory stridor and generalized urticaria. What is the most likely diagnosis?

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