insomnia
"The WORST night of my life. I can only imagine that this would be what someone would experience if they took hallucinogenic drugs.  HORRIBLE nightmares, a sensation that my chest and arms were being restricted, burning.  Woke after every VIOLENT nightmare, trying to forget what I'd just dreamt. 
Headache this morning and TOTAL recall of a night filled with terrible dreams. I am throwing this away!!!!!"