You might look into ADEM, acute disseminated encephalmyelitis. My neurologist mentioned this to me as a possibility regarding my own as-yet-undiagnosed condition. It's an MS-like episode but a one-time-only thing, not progressive or chronic. My neuro said that it is more common in children than adults and often follows vaccination or viral infection. Good luck!
I am not sure, but I suffer from RSD (reflex sympathic dystophy) my onset was a result of an injury, which requried surgery, but through reading I have found things as simple as having a tooth exracted can be this, maybe the needle hit a nerve. Its worth checking out, and to let you know its a very conterversial issue, so I suggest you go to someone who is educated in the field I dont know what area you live in, but I just found an awesome doctor after 11 years, maybe you can call his office and get a referral its Dr Oconnell's pain mangement center in Somersworth NH
If the CK is elevated it sounds like myositis (inflammation or breakdown of muscle tissue). You said you saw 2 neuro's, were they at large, teaching facilities? If not, I would recommend that.