Croup in Adults Croup is an inflammation of the larynx and trachea, mostly seen in young children, but can appear in adults as well. Barking coughs, varying degrees of airway obstruction, and hoarseness are the symptoms of croup. A variety of infectious conditions can lead to croup. It is also known as laryngotracheobronchitis. The barking cough that is characteristic of croup results from swelling and inflammation around the vocal chords and windpipe. Symptoms usually improve within a few days, but hospitalization may be needed in severe cases. Croup affects 3 percent of children between 6 months and 3 years of age in the United States.
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