Will Mri Show Vagus Nerve Damage?

Distal vagal lesions occur as an isolated paralysis of the vagus nerve with no symptoms or signs referable to the oropharynx. Either computed tomography (CT) or magnetic resonance imaging can be used to diagnose proximal or distal lesions.

How do you test for vagus nerve damage?

To test the vagus nerve, a doctor may check the gag reflex. During this part of the examination, the doctor may use a soft cotton swab to tickle the back of the throat on both sides. This should cause the person to gag. If the person doesn't gag, this may be due to a problem with the vagus nerve.

What happens if the vagus nerve is damaged?

If the vagus nerve becomes damaged by physical trauma or the growth of a tumor, it may cause digestive symptoms, or hoarseness, paralysis of the vocal cords and slowed heart rate.