✔ 最佳答案
Yep, I'd have to agree that an ER visit is warranted. Not only for passing out for no explained reason but the fall down the stairs is scary. You could have a concussion or a cracked skull! I really think it is best to get a CT scan done of your head to make sure 1. there is no swelling of the brain (very dangerous!), 2. no skull fractures, 3. no brain bleeding, 4. any explanation to your passing out. I know doctors have looked in the past but please get checked out again.
Have you seen a cardiologist? You could have what is called a PFO (patent foramen ovale) commonly known as a hole in the heart, or a leaking valve or something else that is taking the oxygen from your brain. Could you be pregnant? That would be an aggravating factor.
See if you can get a friend or family member to drive you to the ER. It's better to be safe than sorry. I've seen too many situations like this turn out badly (I work in Organ & Tissue Donation). I wish you the very best and hope you get well soon!!