Try this page:
http://www.nlm.nih.gov/medlineplus/e...cle/000713.htm
Also, when was your last nsg eval? If you haven't been in the past couple of years, you should be seen again, especially with these symptoms. If you think you twisted your neck in sleep, give it a couple of days and get checked out if you don't get relief.
Good luck!
LIZARD