Welcome @chronicbackpain25, Sorry you haven't found much progress in your treatments for Arachnoiditis. I don't think you are alone in your search. I did a quick search of Connect and found others asking about trying to find a specialist and thought it might be helpful to learn what has been shared. Here's a link to the discussions and member comments - https://connect.mayoclinic.org/search/.

I did find a Feb 2025 research paper but not sure how helpful it would be.
-- A Global Bibliometric Study of Spinal Arachnoiditis: Research Trends and Future Directions:
https://www.sciencedirect.com/science/article/pii/S1878875024020370