I have had a neck/back pain that affects my left arm. It feels like a pinched nerve. When the pain became unbearable, I saw my doctor on Thursday and was put on anti-inflammatory, muscle relaxers, and pain killers (diclofenac sod dr 75 mg, cyclobenzaprine 10 mg, and hydrocodone-acetaminophen 5-325). since I began taking these drugs my neck and back pain have improved, but now my left hand is going numb in my thumb and first two fingers and my arm is weak and numb around bicep area. I have less control of the same arm. In 2010 I had a discectomy and fusion in my C4 and C5 vertebrae and it feels like the same thing is happening again.