A 14-year-old has recurrent wheeze, chest tightness, and cough with exercise and viral infections. Spirometry shows obstruction that improves after

Question

A 14-year-old has recurrent wheeze, chest tightness, and cough with exercise and viral infections. Spirometry shows obstruction that improves after bronchodilator. Which diagnosis is most likely?

Accepted Answer

Asthma with reversible airflow obstruction and recurrent variable symptoms

Answer

Chronic bacterial bronchitis causing persistent productive cough and infection

Answer

Bronchiolitis causing wheeze during an acute viral lower-respiratory illness

Answer

Heart failure causing exertional dyspnea, edema, and reduced exercise tolerance

Answer

Vocal-cord dysfunction causing episodic inspiratory noise during exercise

Asthma diagnosis — USMLE Step 3 MCQ

A 14-year-old has recurrent wheeze, chest tightness, and cough with exercise and viral infections. Spirometry shows obstruction that improves after bronchodilator. Which diagnosis is most likely?