Could external trauma from getting hit in the throat very hard permanently damage the vagus nerve in the region? causing dysphagia and vcd?

See doctor: External trauma is not likely to damage vagus nerve but you should have doctor check you out for damage to the larynx. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex, if you have sex.