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Definition:. Croup (laryngotracheobronchitis) is an acute viral infection characterised by a triad of symptoms : barking cough , inspiratory stidor , and hoarseness result from variable degrees of subglottic stenosis, with or without fever.. . Spasmodic croup is characterized by the acute onset of inspiratory srtidor , usually occur at night for several hours and recurring in the next several nights. The child is often not ill or has mild upper respiratory symptoms. It may be a varient of vir9449
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