First of all, this so called Doctor that told you to die, is a jerk......Go to a neurologist, if you haven't done so already...There are lots of medications, exercises, ect., things that can be done to help you manage your pain....I have arthritis, but mine is mostly injury related, and it can be quite painful, but I'm nowhere what you are going through....I wish you the best, keep the faith...
Sandi