Hi and welcome to Neuro Talk,
As I can't help you with your questions, I thought I'd direct you to some forums that might be able to help, just pop in and talk to the friendly people.
http://neurotalk.psychcentral.com/forum10.html This is the Chronic pain forum.
http://neurotalk.psychcentral.com/forum37.html and this is the Depression Forum.
Just click on either of the links to take you directly to either forum. Hope this helps, and you find the answers you are looking for. If you need any more help finding your way around, don't hesitate to ask
Kate