I get confused with diagnosis as well. survived a discogram as well, which showed a blown disc. My Mri showed a bulge, and all didnt see what I certainly felt.
So I still have mechanical pain from bad discs and surgery, but nerve pain from nerves being squished. My scs surgeon told me today that no surgeon would do surgery on me at this time ..... So I will go on and get some relief on monday with reprogramming