<prompt> Most common cause of vocal cord palsy isSurgicalInflammatoryTraumaMalignancy  <response>: Neuritis or surgical trauma thyroidectomy is the most impoant cause. Thyroid surgery is the most common cause when both recurrent and external laryngeal nerves of one side may be involved. Ref: PL Dhingra Textbook of Ear, Nose and Throat, Edition 6, page - 300 