Final answer:
Croup is another name for laryngotracheobronchitis, a viral infection that causes inflammation and swelling in the upper airway.
Step-by-step explanation:
Another name for croup is laryngotracheobronchitis. Croup is a viral infection that causes inflammation and swelling in the upper airway, specifically the larynx and trachea. This can result in a barking cough, hoarseness, and difficulty breathing. It is most common in young children.