When I was 16 I started having these blackout episodes and was tested for diabetes. My blood sugar level was normal so they tested my thyroid which was also normal. I do have low BP. my average BP is around 110/60 which my whole family has a history of low BP. Then I started having tingling in my arms and legs so I had an X-ray which showed no slipped disk so then I had an MRI. The MRI was only on my cervical spine and just showed that the channels where my spinal cord moves through are a little narrower than they should be, which they called spinal stenosis.

I have been tested for probably over a dozen things with no actual diagnosis. I have been tested for diabetes/hypoglycemia, lupus, RA, carpel tunnel syndrome, slipped disk, thyroid problems.... the list goes on and on. Nothing has ever been abnormal in all these tests so they want me to go see a neurologist. Thanks for the link though.