I was wondering if this happens to anyone else: Last year, I had an ovarian cyst rupture. It HURT. I was at work at the time, and I got really sweaty, lightheaded, and nearly passed out. My husband took me to the emergency room, and it took them four times to find any blood pressure at all. I just had a similar thing happen this evening. I had some bad stomach cramps, and I got lightheaded, sweaty and nearly passed out. I was just curious: Does this happen to "normal" people? Does pain cause this reaction if you don't have dysautonomia? The nurses in the emergency room didn't seem to think it was normal to find no blood pressure in someone who was otherwise fully functional. I figure it's a good thing I don't want kids. I'd NEVER make it through childbirth conscious!