I currently have lower back issues with my spine L4 thru S1. Have seen a NS and contemplating surgery. Pain is in the lower back and some sciatica in the legs. The last month I have had pain down my right arm which sometimes feels similar to leg sciatica. I had this feeling in my left arm two years ago and it went away after four months. Never knew what caused it and did not have the severe back issues at that time I have now. I don't know if this is a muscle pull, pain due to arm position from sleeping more on my sides because of the back pain, or pinched nerves in the mid to upper spine. My question is: can you have arm sciatica with no upper back pain whatsoever, or arm pain from pinched lower back nerves?