I always say my head is like a radio dial set to seek. It just skips through one thought to the next. Someone can say "Wow the sky is a pretty blue today" and I'll say "I once saw this really nice car and I would like a car like that," (because the car was blue but people will just stare at me like huh?)
I get intrusive thoughts. I get them more when I'm mixed and not doing well. They are usually scary thoughts and angry. I don't like it.
As for dreams, my dreams are incredibly vivid and realistic. I have very weird dreams but I also have very intensly real dreams. I have very realistic nightmares. Horrible nightmares about things happening to me and my family.

I hate those. But sometimes I have really wonderful and pleasant dreams. Sadly, I have more nightmares than not.