Spasmodic croup (laryngismus stridulus)
- occurs at night
- clinical picture similar to that of viral croup.
- symptoms begin suddenly and are characterized by a sudden onset of
- barklike cough
- stridor in a previously healthy
child. (note that viral croup presents with a prodrome)
- NO FEVER
- Spasmodic croup usually resolves quickly with exposure to
humidified air, only to recur for the next few days.
- Subglottic noninflammatory
edema and, in some cases, spasm of the glottis with closure of the
crowded aryepiglottic folds characterize spasmodic croup.
- Fiberoptic laryngoscopy
- In spasmodic croup: inflamed mucosa, erythematous and with a velvety
- In viral croup: a pale and boggy laryngeal mucosa.
- In bacterial tracheitis: abundant purulent exudate and pseudomembranes.
Emedicine Sept 2004