Doogie, I cant remember where I saw a similar story, but I did and the person said it all began with neck problems. Thinking the vagus nerve runs through the neck. Have you seen a pic of it...you may be onto something there.

this is only a little picture on a site with lots of interesting info on vagus nerve and depression

http://www.riversideonline.com/healt...th/MH00113.cfm