Welcome to Neuro Talk. I sure read your posting very carefully. The only thing I can think of, that maybe you have not done, is to have an upper GI done. This will examine the throat, esophagus, toncils, vocal cords. My dad had 7th nerve damage, and this was due to a condition is his throat. I know it is a long shot, but there has to be a reason why these nerves are acting up. Have you tried a teaching hospital, or Mayo clinic? We will be here for you. ginnie