Vocal cord paralysis means that vocal cords are unable to move during phonation due to disruption of the nerve supply. Individuals affected by vocal cord paralysis have a weak, breathy voice, experience difficulty coughing and often have repeated chest infections.
It can be caused by a stroke, tumours of the brain, surgery to the neck or chest, or any condition affecting the upper gullet.
Treatment for vocal cord paralysis might include a microsurgery during which materials will be injected to restore some functionally of the vocal cords. An implant might also inserted to improve speech and coughing.