Hey Suzy! I had rads at first diagnosis, definitely didnt have tingling in fingers at all. That is a definite sign of neuropathy from Taxol and it can come a long time after finishing. Im 14 months post chemo and saw my Oncologist last week and said I had weird tingling in my feet and itchy! he said TAXOL even this far along as its the nerves regenerating, it has settled to be honest. It does sound to be nerve and yes you are right could even be the way you are laying on the bed and youre pinching a nerve somewhere in your back. Radiation I wouldnt think would cause it however. Hope it settles. Hugs Melinda xo