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In medicine, laryngospasm is an uncontrolled/involuntary muscular contraction (spasm) of the vocal folds. The condition typically lasts less than 60 seconds, but in some cases can last 20-30 minutes and causes a partial blocking of breathing in, while breathing out remains easier.
In some individuals laryngospasm can occur spontaneously or as a result of reflux or impaired swallowing. GERD is a common cause of spontaneous laryngospasm. Treating GERD can lessen the frequency of spasms. The onset of spasms may be caused by a viral infection.