What is the most common cause of spontaneous laryngospasm? Treatment?

Laryngopharyngeal reflux.  Treat with proton pump inhibitor.  For refractory symptoms, laryngeal botulinum toxin injection is a potential treatment option.


Source

Obholzer, RJ.  "An approach to the management of paroxysmal laryngospasm"  J Laryngol Otol.  1 Jan 2008.