Best bet is to connect with Dr Forest Tennant in California...retired dr that has dedicated nearly all his time to researching solutions for treatment for this. https://arachnoiditishope.com
You can email him and he'll answer. I use many natural remedies to help with this condition. The top recommendations are steroids and strong NSAIDS of course, but I cannot use these and have found other things that can help. Dr. Tennant has suggestions also.