I've heard of in-patient ketamine treatments...so he is not the only one who does this. I don't have much advice to offer about the treatment itself because I haven't had it done. What I will say is that if you don't feel comfortable...don't move forward until you do. The doctor will, most likely, not change his protocols for you...so you either need to ask those questions and see if you are comfortable with this procedure or find another treatment option or doctor. Do not feel pressured into anything you don't want to do. All treatments come with risks and especially with CRPS...there are no guarantees...so you need to accept that there are risks and while we always go in believing the best...understand that those risks are a reality. Complications happen...pain may not get better...pain could get worse...or you could go into remission...the pain could be cut in half...etc. Only you can decide if this is the right thing to move forward with for you.