CRPS Treatment

I have had a rare pain disorder called Complex Regional Pain Syndrome (CRPS) since I was 9. This causes me to be in extreme pain 24/7 with no medicine, no treatment, no escape. The illness can come and go but only with physical therapy. Sadly, I have gotten to the point of where I cannot be active without some sort of relief. It has been a year now with my walker and I just want normality. So in research, I came across this pain treatment with ketamine, but my insurance does not cover it and its very expensive. I’ve decided to ask the world for help so I am able to see through with this treatment and feel some sort of relief. Also here are some pictures of how black my feet get and my walker. I don’t have pictures of the skin falling off my hands but it happens too. But I would be extremely grateful if anyone could help out. Thank you.