Well if I understand the word correctly then it did happened to me. My bipolar is connected to some other mental and medical conditions. Any one could have trigger it. It happened about three weeks back when I hit mania in a big way it also trigger an epileptic event an a very danger's psychosis. For two weeks I could not remember a thing that went on around me and hardly reacted to any thing around me and I was very aggressive. This is some of the things that my wife and others told me. Even people that I met for the first time I could not remember them at all. If there is some other things that you want to know just give me a message and I will answer.