Hi all, First post, I could use some advice. 6 weeks ago I had a bad stomach flu - lasted only 3 days, but I haven't been the same since. A week after I kicked the flu, I had a bad case of vertigo, nausea, tachycardia, and shaking. Called 911 when I thought I was dying...they filled me up with IVs and I recovered. (They said I was dehydrated). Same thing happened 4 more times over the next few weeks, and ultimately I was admitted to the hospital for a day. Again, diagnosis of dehydration. A pattern emerged whereby standing and walking for any period of time would bring on the symptoms... They checked my orthostatics (BP, pulse) and noted "orthostatic intolerance" with a rise of 38 BPM in the standing positon. It was checked 3 times. Interestingly, my blood pressure has not changed (it's always been low), but the pulse races in a vertical positon, bringing on all the symptoms. Now I'm unable to walk and I'm in a wheelchair for fear of the full blown attacks. I am nauseated all the time, and I have "bursts" of warm tingling in my head, especially when I try to sleep. I also get tremors and shaking when it gets bad. I've had nearly every test done (MRIs of brain and abdomen, blood tests, urine tests, etc.) but so far no smoking gun. I've seen a cardiologist and my EKG checked out fine. He was familiar with orthostatic intolerance and POTS and ordered a tilt table test, but unfortunatley that won't happen for another month. My husband wants to take me to Mayo Clinic in Scottsdale for full tests, but they say they don't accept patients until a POTS diagnosis has been made. I also just developed a rash on the sides of my face and neck. In the mean time I am miserable and immobile, and losing weight due to lack of appetite. I am also very sensitive to temperature changes. Historically - before my flu incident - i would get 'head rush' when standing up, irratable bowel syndrome, and gluten intolerance. I am desperate to understand what is going on - do these specific symptoms seem like some version of POTS? Also, any suggestions for how I could fast track some type of better diagnosis and treatment? I am located in Northern California. Thanks for any advice. Teagirl