I passed out at work on Friday. I was taking a class in SAP and I suddenly felt dizzy at about 3PM. The next thing I knew I was in an ambulance on the way to the hospital. I stayed in the hospital overnight but all the tests came back negative so they let me go home late Saturday evening.
It's probably Vasovagal Syncope which I have had for 15 years. I haven't had an attack in about 5 years so this was a bit of a surprise. I am taking a couple of days off from work because the attacks really take a lot out of me. I always feel drained after passing out.