SCS causes RSD at the incision sites for 60% of operations but as sande says even some of those say they are still better off however you have to accept that the majority need further operations because of moving leads or failed batteries and everytime there is a 60% chance of causing more RSD. Some have reported that they have had the SCS, removed because it made thins worse. It may help with the background and sharp stabbing pains but I have yet to read of anyone who said it helped with the hypersensitivity. In my case the first spread was caused by the use of a sensitivity pin 4ins outsiade what was thought to be the affected area causing it to spread from hand upto elbow so there is no way I am going to let them operate on me but everyone of us is different.
You need to think it through and weigh uprisks versus possible gains but it will not ake away all your pain