I've been reading so much on this board in recent weeks and feel like I finally found a group that understands! Just a bit of history on me. I've always had 'issues' with my low blood pressure that would cause occasional faints, headaches, etc. However, it was intermittent and not severe. Suddenly, on August 24th of this year, I had a very bad tachycardia episode and thought for sure I was having a heart attack! As my husband rushed me to the ER, I passed out. Once there, they did all kinds of tests: stress test, echo, scan, blood tests, etc. Everything came back normal except for my elevated heart rate. After some beta blocker by IV and fluids, I seemed fine and was discharged. Problem was that I never really got better. I continued to have episodes of passing out and high heart rate just on standing. I've lost 15 pounds just from the nausea alone. It's been pretty severe since that episode. Went to my PCP and she suggested thyroid as she has every other time I've gone for fainting issues. It was, as usual, negative. Then she decided it was anxiety and prescribed me Xanax. At that point, my husband lost it because he was sure it was NOT anxiety and he's been witness to this so many times that I can understand his frustration. Found a new doctor and within the first 10 minutes, she felt confident it was some type of dysautonomia. Was referred to the Cardiologist who took less than that to decide the same thing. Onto the Electrophysiologist today and he described my symptoms to me - he was spot on! I was pretty symptomatic today and he took my BP and pulse in his office sitting and standing and there was a significant difference. He scheduled me for a tilt table test first thing tomorrow morning. He said they want to move fast on this because the severity of my symptoms are pretty bad. I am so happy to be getting something done because I do not last longer than 10-15 minutes standing right now but the TTT makes me really, really nervous. I know how absolutely horrible I feel when I pass out or even start to pass out. When I've tried the poor man's tilt test at home, I never make it past ten minutes and my machine can never get that last reading because it just errors out. I think the part that terrifies me is that at home I can immediately lay down but on the test, I will be strapped in and standing through the pain as the blood pools in my legs, the nausea, the shortness of breath - argh!! Am i worried for nothing? Is it really that bad? And in another irrational thought, I'm terrified that it will be the one day that it doesn't show anything! I am having a really hard time right now and just living a normal life has been near impossible for me in the last month. Oh and just one more question. Did anyone have their symptoms suddenly get severe or start out of the blue without anything that seemed to cause them? I was just making my daughter's 16th birthday cake when I had that first bad episode and it's been very bad every since then.