I have a sore neck and everytime i turn my head, my vision goes funny. it feels like my brain moves and i get dizzy and nauseous. what should i do?

See below: These are symtoms that need to be evaluated thoroughly your physician. He/she will be able to discuss his/her findings and suggest a plan.

Dissection?: I would recommend seeing your doctor soon. Not enough info or exam to tell, but could be a vertebral dissection or narrowing of a blood vessel in back of head. Special imaging is needed to look for this, and complications can be devastating if gone undiagnosed, .

Neck and vision: Should have checked out. Sounds like vascular problem possibly from post vertebral artery.