Ouch! Have you tried anything topical? You can order 4% lidocaine cream from Amazon. Maybe it would help to apply it before PT or fabric contact. I hope there is some insight at your upcoming visit.
I currently take 10mg nortriptyline for nerve type pain. It doesn't kill it but it does make it manageable. I tried getting off it and really noticed! That lasted about a week before I gave up and went back on.I wouldn't have tried but My neuro was being fussy about my ketamine infusions (of which he does not approve) and thought I should give up the Nortriptyline. Hmmm, maybe he is trying to get rid of me. I think I challenge him too much.
The strongest thing I took was tramadol. I just personally don't do well on opiates and their record for helping neuropathic pain is not great anyway.
I hope you find relief soon. Sending hugs,