Hi, Iskimud! Welcome to NeuroTalk!

Sorry about the pain you're experiencing, it can be extremely trying. As to your question, it could be so many, many other things, or even a combination of multiple things, no one here can say for sure what is causing it.

You might benefit from visiting our spinal disorders forum here: http://neurotalk.psychcentral.com/forum22.html

Also, we have a nifty search engine located in the toolbar near the top of every page. Look around and feel free to join in anywhere.

Above all, have you seen a neurologist?