i've had headaches that include the temples too and suffer from a combination of TOS and cervical issues. the headache and pain can definitely be part of either or both. but your symptoms sound severe. i hope that you will continue to try to find out what it is.
here's a website that talks about dizziness. have you seen an ENT? not that you should but that could be related to the dizziness and feeling faint. do you have ear pain or balance problems?

http://www.dizziness-and-balance.com/index.html