skip to main content

Vocal Cord Dysfunction — RACP Paediatrics MCQ

Instant feedback + full explanation. One question, done properly.

HardRespiratoryVocal Cord DysfunctionRACP Paediatrics

A 14-year-old girl with known asthma presents with episodic stridor, throat tightness, and dysphonia during exercise. Her spirometry is normal. Flow-volume loop shows flattening of the inspiratory limb during symptoms. What is the most likely diagnosis?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: A — Vocal cord dysfunction (inducible laryngeal obstruction)

Vocal cord dysfunction (now termed inducible laryngeal obstruction) presents with inspiratory stridor/dyspnoea, throat tightness, and flattened inspiratory loop. It is commonly misdiagnosed as refractory asthma. Diagnosis is confirmed by laryngoscopy during symptoms. Speech pathology is the primary treatment.

Reference: National Asthma Council Australia – 2024 – Australian Asthma Handbook