Hi,

I can relate to this, I have fainted several times since my latest concussion 3 years ago.

I have tried diet changes (salt), had my BP checked, had an EEG (showed seizure patterns but no seizures), holter monitor etc.

My vestibular therapist also mentioned what Mark has said about the autonomic system and blood pressure. For now I take precautions if I am not feeling well, am tired, etc as I tend to feel much dizzier and black out. I had also done some research why I would convulse after fainting, which seemed to be related to blood pressure as well.

I hope that you find some answers.