Awake, or asleep, they would come up on you, instantly. For a while, before I knew what they were, I thought I was losing my mind...I paniced, which made it worse, then hyperventilate. My though, was, I'm scared, but I don't know why I am scared! If I was sleeping and had one, I thought it was a nightmare, but why is it still here, 5 minutes, later? When it happened, in waking hours, driving, I became disoriented....I forgot where I was going and even how to get there. Everything seemed strange, even though I drove that rode almost everyday, for the past 10 years. If I was going to work, I couldn't remember how to get there. And finally, everything seemed so much clearer, brighter, more vivid and colourful. When I would get them, when I was resting at home, or, wherever, I would have to go outside and breathe!!! A few big inhale/exhales and I started to feel better.