Sometimes out of nowhere, I get these weird shock like tingles that spread throughout my entire body, and then I lose my vision and sometimes see like stars and bright lights. And then I become unresponsive and if Im standing up I lose feeling in my legs, and can't stand up, and when it's over I get really confused.
I have no idea what this could be but it has been happening since I was like 8 or 9 and I don't have any neurological conditions, that I am aware of. And it's not just when I stand up very fast, it's sometimes when I have already been walking, or I'm just sitting down.
Any replies would be greatly appreciated,