Who is affected by croup

Croup causes the airway to swell and narrow and makes you have a harsh, barking cough and trouble breathing. It usually develops a day or two after the start of an upper respiratory infection.

Croup most commonly occurs during the late fall and early winter in children 6 months to 36 months of age.1 Adults rarely get croup because their breathing passages are stronger and larger than children's.


  1. Johnson D (2007). Croup, search date November 2006. Online version of BMJ Clinical Evidence. Also available online: http://www.clinicalevidence.com.

Last Updated: June 11, 2008

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