Constant dizziness, unknown source

[cf123456]

I have had constant dizziness for 5 years, a feeling like im being shifted, falling, on a boat, things like that.

There are other symptoms along,
my vision is very flashy, it is noticeable on solid objects,
when on computer for long hours i get very dizzy,
sometimes when i walk the ground moves up and down,
when I'm dehydrated everything looks as if it is "sinking," it is very noticeable on the ground,
when I get nervous it gets worse
when I sleep or don't move it still feels the same,
when I don't move for a while my body starts to "sink,"
I sometimes feel as if I'm swaying foward and backward sitting
When I get up quickly the blood rushs to my head and I feel faint
I have never fainted.
I have gone to every doctor, and need to be cured it drives me insane

[Paderla Anitha, DNB]

Hello and hope you are doing well.

Your symptoms of dizziness, headaches, lightheadedness, if are relieved by eating something, indicate that you might be having episodes of hypoglycemia. Inadequate sleep can also cause tiredness, fatigue and dizziness. Other causes for these symptoms are inner ear infections; brain disorders heart problems, fever, stress, low blood pressure and anxiety. Please consult your GP who will examine you and may ask for blood tests for evaluating blood sugar and CBC.

Hope this helped and do keep us posted.

[Londres70]

What physicians have you seen already?  ENT Specialist?  Vestibular testing done?  MRI done?  

Anything significant happen prior to this starting?