Laryngospasm causes

Laryngospasm is most commonly caused by anything that irritates the larynx, including secretions, blood, or debris. Nasal irritation, abdominal, buccal, pharyngeal stimulation, and even smell have been implicated. More likely when anesthesia is “light.” By definition lasts longer than the actual stimulus (this is a spasm). Common after upper airway procedures, particularly in children.