I have bipolar and a number of other issues. My question is, I am on lithium and am experiencing pain in my neck, back and stomach. I have been told that it is nerve ending pain and feels like muscle pain everywhere. So I have been prescribed gabapentin and Tylenol 500mg x 2 three times a dog. This is very painful. Does anybody have or has had this, and what was the treatment and does it go away with time.