I agree with Burnbabyburn , you don't want to get worse and so far if had known for few years now, you should never get injections on your affected rsd areas,is kind of risky,think about it and very well.
Also another site where you can get ideas and actual facts informations about rsd as well as those just been provide to you,also consider rsdsa.org and go to treatments and you will see a lots informations as well, fingers cross and wish you the best for sure,with love Jesika .