insomnia
"If you give this a try hang on for a possible wild ride!!!  I had the most vivid night terrors of my life.  They were so real I was soaked in sweat.  Several times I felt like I woke up from a dream but was actually still dreaming and that was beyond disorienting.  I also managed to send some bizarre texts and did a few things around the house, I am still not sure what all I did...  If you do try this I strongly suggest you don't do this sleeping alone, you may need someone to keep you safe in case you experience some of these.  I understand not everyone does and I don't know the real frequency, but safety should definitely be a key consideration."