DefinitionLaryngeal nerve damage is injury to one or both of the nerves that are attached to the voice box.Alternative NamesVocal cord paralysisCauses, incidence, and risk factorsInjury to the laryngeal nerves is uncommon.However, it may occur from:A complication of neck or chest surgery (especially thyroid, lung, or heart surgery)A breathing tube in the windpipe (endotracheal tube)Tumors in the neck or upper chest, such as thyroid or lung cancerSymptomsDifficulty speakingDifficulty swallowingHoarsenessInjury to the left and right laryngeal nerves at the same time is an urgent situation that can lead to difficulty breathing.Signs and testsThe doctor will see if the vocal cords move abnormally. Abnormal movement usually means that a laryngeal nerve is injured.Tests may include:BronchoscopyC