It is as though there is a kind of "mind storm" - very high turbulence, difficult to be or feel stable, and everything just swirling about me. I'm conscious that my mind is doing this, that I am in a state where rationality is controlled totally by a deeper part of my brain, but I am also powerless to stop it. Being aware of major triggers (as was the case here) is of limited use. I felt this coming, but the unfolding is gradual, and stepped, with the rise of each step being very large. Thus, I first ease in to it, then fall a step, and with each one, it gets 10 fold worse.