Vocal fold paralysis also known as vocal cord paralysis is a voice disorder that occurs when one or both of the vocal folds dont open or close properly single vocal fold paralysis is a common disorder paralysis of both vocal folds is rare and can be life threatening. Vocal fold paralysis distinguished from vocal paresis is the total loss of vocal fold mobility due to a lack of neural input to the vocal folds these conditions result from continuous damage to the laryngeal nerves 4 3 and often lead to vocal disability 6. Unilateral vocal fold paralysis uvfp occurs from a dysfunction of the recurrent laryngeal or vagus nerve innervating the larynx it causes a characteristic breathy voice often accompanied by swallowing disabilty a weak cough and the sensation of shortness of breath this is a common cause of neurogenic hoarseness. Causes in vocal cord paralysis the nerve impulses to your voice box larynx are disrupted resulting in paralysis of the muscle doctors often dont know the cause of vocal cord paralysis. Vocal fold or cord paresis and paralysis result from abnormal nerve input to the voice box muscles laryngeal muscles paralysis is the total interruption of nerve impulse resulting in no movement paresis is the partial interruption of nerve impulse resulting in weak or abnormal motion of laryngeal muscles
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