Why has my voice been hoarse since I had thyroid surgery?

Some patients have a little bit of hoarseness after surgery for a couple of days. Bruising or injury to the recurrent laryngeal nerve that feeds the voice box causes hoarseness. However, 5 of every 100 patients that have a thyroidectomy or parathyroidectomy will have hoarseness that can last up to 6 months (temporary recurrent laryngeal nerve injury). If your hoarseness last for longer than 6 months we recommend that you are evaluated by an ear, nose and throat specialist.