What a royal disaster. Some-one should be made accountable for so many people to get it wrong. I am so sorry that you have had to endure this for such a long time. Grrrrrrrrrr. There should be some high up board that governs psychology that could at least slap some wrists for the gross error in misdiagnosis.
I do so hope that your neurologist can treat you and deal with black outs.
At the very beginning of your treatment some-one should have suggested this test that you have now had.
Heads should roll............