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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.
Laryngospasm or laryngeal spasm can also occur as a complication of surgical anesthesia, which is used during a surgery. Anesthesia can cause irritation to the vocal cords, especially in children. Anesthesia which causes laryngospasm or laryngeal spasm can be a potentially life-threatening situation.