Heh, yeah, this happened to me every single time I stood up for two days after giving blood. Oddly enough, I don't usually have this problem while actually giving blood and immediately afterwards, but a couple hours after I donated I started having this happen. It happens to me a lot anyway (a few times a week), though, so I know that when I start to feel the tunnel vision coming on, I have a couple seconds of diminishing lucidity to grab onto a support or kneel down and ride it out. At worst, I lose awareness of my surroundings, but I never completely lose consciousness. It also used to happen several times a day back in early high school, I think because of a medication I was taking back then. It really doesn't bother me much since I'm so used to it, and I'm pretty good at grabbing onto things and holding on discretely if I'm around people, but if it happens when someone's talking to me, I can no longer hear what they're saying and it's tough to hide what's happening and that's pretty embarrassing. When I'm not self-conscious about other people around and I'm in a safe position, I kind of like the very brief, almost blissful lack of awareness outside myself.Aum wrote:I'll never forget two years ago when I was getting blood work done, the technician took my blood and to my surprise I didn't faint. I was so happy. I laid there for 10 minutes to be certain, and then got up and left. As I walked down the street I started to get tunnel vision, and the only safe place nearby were the steppes of a church that I ran up and collapsed on, all fours splayed out so archetypically at the door of the church. I must have looked all "save me!" like. When I woke up there were two random people from the street asking if I was ok. It was such a gong show. lulz
I was a little worried though, I was supposed to go SCUBA diving three days after giving blood this time, and if it was still happening frequently by then that probably wouldn't have been a good idea. It cleared up though, and I had no problems.
I wonder if I have the same thing you do, Aum. I always asked my doctors about it when it was happening very frequently and they always just told me it was medically normal and not to worry about it. I was always curious though about what was actually happening.