I so know about not wanting to go try and find yet another doctor. It is the Gerbil wheel of going round and round, and you want to get off the ride.
If it meant your health and sanity, travel, do what you must to have better quality of life. I interviewed ( notice I said I interviewed) 4 pain specialists before I found one I wanted or trusted. One was so full of himself I received a 20 minute lecture, on the dangers of medications, and I never got to say a word. NOWAY....I don't want you to stop until you find the right combination of doctors that can help you. That IVG I have heard of, and I think there has been success with it. I know you have done the research on it. Did your Neuro give you a reason why he didn't want to try? I have two docs. now that don't agree. I tend to not do anything unless I get them in agreement, and yes I push them talking to each other. thats a miracle!
I wish you better days Raven. We may not have the same conditions, but I do have empathy for what you are going through. I do care. ginnie