Re: Chronic neck and back pain, unexplained nerve symptoms--what next??
Welcome to the board.
I know how frustrating it is to have a mystery ailment that no one seems to be able to diagnose or figure out. Did you happen to see the article in NYT about a week or two ago on the dangers of yoga, and how many people are suffering injuries, particularly from head and shoulder stands? I guess you might fit into their data.
You mention seeing many different practioners, but you do not specifically mention seeing a spine specialist. Have you consulted with a fellowship-trained orthopedic spine surgeon or a neurosurgeon -- someone who limits the practice to issues of the back and neck? If not, I think a consultation is in order.
A neurologist is good at diagnosing diseases that pertain to the nerves and performing tests on nerve functions, but is not trained to provide a diagnosis of an issue pertaining to soft tissue, or bone within the spine.
If you have seen a spine specialist and he/she cannot find any reason for your pain, I would suggest consulting with a sports medicine specialist (which is an ortho with a special fellowship in sports medicine).
It certainly sounds like you have some sort of nerve compression or irritation going on. I can tell you that once a nerve is irritated, very little activity can keep the area inflamed, resulting in further irritation to the nerve. It can be very difficult to break this cycle and it can go on for months and months...or until the cycle is somehow broken and the nerve has sufficient time to heal without further irritation.
It may be that your posture or structural alignment has changed due to compensating for the initial pain from the injury. It may be that a vertebra or cartilege was crunched just enough to very slightly pinch a nerve...and while it is irritated and causing symptoms, the damage is not enough to show up on an EMG.
I would think, for now, you should think about walking for your form of exercise. You do need to keep some level of activity going, and walking is the most benign form of activity for your discs and spine in general.
I would keep icing the back of your neck in case there is still some inflammation, and it may help with the pain.
I'm sure there is someone out there who can figure out what is causing your pain. It is a matter of connecting with that person.
Please keep looking...and let us know how you are doing.