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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.
1) Gastroesophageal reflux. Laryngospasm occurring especially at night is often caused by gastroesophageal reflux or acid reflux. If your healthcare provider suspects acid reflux is causing your laryngospasm, he or she can prescribe special medication (antacids) to treat the condition causing the laryngospasm.