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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.
9. Sleep-related laryngospasm Very rarely, some people have a spasm of the throat that closes off the airway and halts breathing during sleep. The result is similar to a single episode of apnea, but these patients do not have apnea. Typically, the patient will wake up choking and jump out of bed, clutching the throat.