I also do not think anxiety and depression causes pots. The proof I had that I was not suffering from panic attacks was when I found my blood pressure would make huge drops during episodes. As an emt I can not remember a person with a panic attack having hypotension. The anxiety I experienced during my drops in blood pressure was a normal response that happens when the brain is not getting enough blood. It is much like when a person having a heart attack tells you they are going to die just before they crash. The heart does not pump enough blood for the brain to function and as a result they feel panic and anxiety. The heart attack is not a result of the anxiety. Likewise our systems are damaged somehow so that our brains do not get a full blood supply or all the chemicals we need. From here on I need to say this is just my opinion from the web research I have done so do not take it as gospel. In an earlier post I talked about the anxiety I had at night when I got off of antidepressants, this was a result of blood pressure dropping below a systolic of 90 which is considered shock. On the " pots place" website serotonin uptake inhibitors are used as a treatment for pots. I think some of my pots is caused by a lack of serotonin because celexa takes away the night bp drops. However, even when I take the max allowable dose of celexa I still have pots. Stress hormones have been proven to shrink part of the brain I forgot the name of the part but it is hippo something, it deals with memory and learning. If the chemicals released by stress can do that to the brain what else can they damage in our neurological system? Likewise ordinary infections can cause heart attacks and nerve damage. I have better stop here because I have been sitting up too long and I can tell I'm losing my concentration. Anyway I'm going to Cleaveland Clinic next week to see Doctor Fouad hopefully she will give me the tests that I need and look for the real answers and not look for the easiest answer.