Kathrin is right, this is just your OCD trying to grab onto anything it can to make you feel bad. It's funny you mention the show Paranormal State because I also saw that episode, but there's a difference between how I interpreted the show, and how you interpreted the show, and you'll see it all comes down to how your OCD granbs onto certain things.
First off, I believe in the paranormal becuase there are way too many unexplainable things on this earth that people see or hear that are not attributed to any kind of mental disorder. So I guess you have to ask yourself, what do you believe? Do you believe in spirits and ghosts? Do you believe in demons and harmful spirits? Or do you believe that this kid was just a schizophrenic and has other emotional issues? While I know there are many so called "psychics" out there, I do believe there are a select few people who really can see and hear spirits, noteably one of them is Sylvia Brown who often appears on the Montel Williams Show.
Remember that the more you dwell and obsess on these intrusive thoughts, the more power you give to them.