I have been lightheaded and dizzy with severe nausea for weeks. The medical doctor wanted to do tests for hormone-secreting tumors! I said "NO". Then I went to my chiropractor who said my neck was "stuck." He adjusted me and the dizziness was completely gone. This was a week ago, and no return of any symptoms. Sometimes I get really tired of the medical doctors, what a relief that it was just a stuck neck!