this has been happening to me for the past 6 years, about 2 times a year. 

It is always when I stretch and raise my arms above my head and usually in the morning. Although one I got out of bed, reached for my housecoat from the back of my door and I actually blacked out slightly, hitting my face twice and back in the door jam, giving myself a fat lip, bruised eyebrow and cutting my back. 

When I stretch, I always get lightheaded, dizzy, legs give out from under me and end up slowly going to the ground on all 4’s and shake almost convulse. I am fully aware what’s happening but I can’t stop it. I hear a ringing noise and my vision is clouded but I can see and hear, it’s bizarre. It lasts about 15 sec & then I’m fine 

I’ve been to the doctor and she suggest seeing a neurologist surgeon but it’s to expensive and I just can’t afford it. She thinks it could be cervical or something neurological. 

Next time it happens, she highest going to the ER because they will run all the tests/scans/X-rays  there and it will be so much cheaper. 

Still waiting...