hello downfall, welocme to Neuro Talk, like Ali I am also not sure, but here is a link that may get you in the right direction as far as forums

http://neurotalk.psychcentral.com/forum105.html

this is the occipital and other craniumsforums. but they talk about nerve blocks and perhaps posting the question there you may get better directions as to posting or and answer, again welcome to NT and hope you get to feeling beeter real soon