Has anyone mentioned RSD Reflex sympathetic Dystrophy it can be brought on even by a very minor injury to the area or your neck affecting your arm or hand on that side .I developed it after a more severe injury to my neck a whiplash injury that also involved 4 bulging discs but learning more about it through the years it can start with a minor injury even a cut that throws your sympathtic nerves out of wack t feel pain in your brain more .It also if left undiagnosed to long will become worse and lead to fibro with time and other things .You need to find a neuro who has knowledge in this area many don't it is also been known as Cronic Pain Syndrome its been around for many years different names or you can google it and read up on it see if the symptoms fit.

Good Luck ...I have been on pain meds for the nerve pain and breakthrough pain and find warm water and massage very helpful meaning about 60% winter has been brutal in MA this year for that and the fibro as many have said I feel almost like I have devolped agoraphobia not being able to leave the house for a couple weeks at a time ....spring hurry up as anxiety levels go up from cabin fever/extra pain !!!