This could possibly be what im dealing with, i overused hydrocodone about 2 months ago and ever since then have had a whole range of symptoms, what can i do to repair the Vagus Nerve? When i went to the ER after a week of feeling like i had an pneumonia, shortness of breath, and tingling in my hands and feet they said it was anxiety and i wasn't dealing with withdrawal or overdose since it had been a week already.