Last year I had that problem too, hand go numb, then arm started killing me , then couldn't turn my neck without pain. Went to chiropractor many times and no help had xrays/MRI done and found out I had rupture discs C4/C5. Had spinal fusion surgery done in Sept of last year, off work about about 10 weeks, now much better. Still have some neck pain but nothing like it was. And I can ride a motorcycle again.