I have been struggling for 2 years with the following symptoms: feeling lightheaded, loss of vision, shortness of breath, headaches, nausea, insomnia, fatigue, difficulty concentrating, and shakiness. These symptoms occur mostly when I exercise, if I stand too long, stand up too fast, if it is very hot, or if I don't drink enough water. No doctor has been able to figure out what is wrong with me and most say I just have anxiety or that it is all in my head. I am wondering if anyone has been diagnosed with Dysautonomia in California or knows anywhere that I can go to be assessed? If there is nothing in California I am willing to go our of state. I just want to figure out what is happening to me.