Something like this used to happen to me when my anxiety was really high. There were gaps in my life. Anywhere from several seconds to several minutes. The most scary was I was driving and I suddenly found myself many miles ahead not remembering how I crossed two bridges along the way.

At other times I feel like my mind was inside someone else's body, like I was looking through their eyes and moving their limbs. Totally unreal. This was very unpleasant. This was before I was diagnosed with BP and on antidepressants.