I have had all test done mentionedthey and thenI some. they said I have autoimmune autonomic neuropothy brought on by lyme disease, very rare and very little know about it. I'm learning to deal with it and the meds help I have not had a syncope episode in a long time. I hope someday there can be a cure.
Hello,
For syncope/fainting to occur, either the reticular activating system in the brain needs to lose its blood supply, or both hemispheres of the brain need to be deprived of blood, oxygen, or glucose.
So it can be due to fall in BP, hypoglycemia, dehydration and inadequate electrolytes in the body, postural hypotension(orthostatic hypotension),, blockage of arteries supplying blood to the brain esp. the carotids, anemia, vasovagal attacks or underlying neurological conditions(like MS and motor neuron disease)
Sometimes, there are partial or complete blockages in the arteries that supply the brain with blood. These blockages can cause a temporary loss of blood flow (called transient ischemic attack, or TIA for short), or permanent loss of blood flow (called stroke; also called cerebrovascular accident).This can lead to impaired blood flow through these arteries and so dizziness. In such cases CT brain can be useful. I feel that you seem to be having TIA. Please consult a neurologist for complete neurological examination.
I sincerely hope that helps. Take care and please do keep me posted on how you are doing.