Right now, I am on gabapentin, working up to 900 per day. For the pain.
I am tapering off the cortisone now, which should have taken care of the inflammation.

Then I'm also in physiotherapy to massage my shoulder/neck, with traction and light exercises.

I am going to ask my doctor for neuro-friendly infusions and my orthopedic for acupuncture. Or maybe he will have some other treatment for me.

I'm sorry you are going through this, I hope for answers and the right treatment plan for you. Please keep us updated!