What is croup?

Updated: Oct 18, 2018
  • Author: Germaine L Defendi, MD, MS, FAAP; Chief Editor: Russell W Steele, MD  more...
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Answer

Croup is a common, primarily pediatric viral respiratory tract illness. As its alternative names, acute laryngotracheitis and acute laryngotracheobronchitis, indicate, croup generally affects the larynx and trachea, although this illness may also extend to the bronchi. This respiratory illness, recognized by physicians for centuries, derives its name from an Anglo-Saxon word, kropan, or from an old Scottish word, roup, meaning to cry out in a hoarse voice.


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