That certainly is a tough challenge.
I too am sensitive and allergic to a lot of meds, especially IV and injected ones. Steroids aren't for me either but I do tolerate cortisone injected into problematic joints.

For symptom control, I can use Diclofenac compound topically to control localized inflammation and pain, so that might be worth a try.
Ibuprofen, Epsom salt baths, Baclofen are other symptom controllers that might work for you.

Hoping that you find something that eases things for you.

With love, Erika