Croup refers to an infection of the upper airway, which obstructs breathing and causes a characteristic barking cough.
The cough and other symptoms of croup are the result of swelling around the vocal cords (larynx), windpipe (trachea) and bronchial tubes (bronchi). When a cough forces air through this narrowed passage, the swollen vocal cords produce a noise similar to a seal barking. Likewise, taking a breath often produces a high-pitched whistling sound (stridor).
Croup typically occurs in younger children. Croup usually isn't serious and most cases can be treated at home.
Dec. 19, 2015
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