Vanderbilt is the best place to go for dyautonomia assessment and diagnosis- I saw Dr. Biaggioni in 2012. They also have a Research program that you can participate in that is free if you are accepted and provides a lot of info into your disorder and education. What helped me was to keep hydrated, Salt tablets, eating smaller meals, avoid getting overheated, I bought a used recumbent bike and no matter how bad I felt I exercised 20mins daily and lower extremity weights/squats 3x/week no matter what, Increased sleep, decrease stress(easier said than done). Cognitive behavioral therapy- since having illness is very stressful, do not bend over,-squat instead, no climbing stairs if possible, avoid eating large meals, avoiding lactose, white sugar and other refined carbs & gluten since they can increase symptoms, do not give blood, no strenuous exercise, avoid fatigue, get plenty of sleep, do not give blood, no energy drinks, no blowing up balloons, no reaching above head. I hope this helps you too.