Soleil,
Yes, there is a difference between pain management clinics and a Pain Medicine Doctor. Now, some pain mangement clinics do indeed have Pain Medicine Doctors, but, others dont like the other poster described, tests, tests, tests...
I would suggest you going to the American Academy of Pain Medicine website. You can do a search for a Doctor in your city/state. I did this and found a wonderful pain physician. Granted, I had to call many numbers and receive many "no we dont treat your condition", but eventually I found a Doctor whom was educated with my condition.
These doctors specialize in pain medicine and treat chronic pain. Once you find a Doctor, you will need to have your phsycian refer you to the pm doctor. This was my last resort when I had tried all other options/treatments available and nothing worked. My only option left were invasive procedures and I am not comfortable going there.
I wish you the best,
Chriztene