Paralysis of the left vocal cord may be caused by damage or compression of the motor nerves in the larynx due to trauma, thyroid surgery, tumors, and other factors.
1. Trauma: Trauma such as fracture of the base of the skull caused by blows or car accidents may compress the nerves controlling the vocal cords, leading to paralysis of the vocal cords and symptoms such as hoarseness.
2. Thyroid surgery: during thyroid surgery, the recurrent laryngeal nerve, which is involved in voice production, may be mistakenly injured, resulting in paralysis of the vocal cords and symptoms such as hoarseness and loss of voice.
3. Tumor: Suffering from brain tumor and laryngeal tumor, etc., the tumor tissue may compress or affect the recurrent laryngeal nerve leading to vocal cord paralysis.
Neck tumor and nasopharyngeal cancer invade the base of the skull and other factors may also lead to vocal cord paralysis, it is recommended to go to the hospital in time to find out the cause of the disease and carry out relevant treatment.