Sleep Disorder or Something More?

I've been having this weird sleep thing going on since I was in high school (I'm now 30). It usually occurs when I take a short nap. Sometimes it will happen once a month or as frequent as 4 times a week.

In my "sleep" I'm really consious that its a dream. There will be a huge "rush" in my head (the rush sound you get in your head when you yawn).

In this dream it is always the same: I'm aware that I'm lying in my bed, and some force will start slowly dragging me across the bed. Sometimes I feel my body slide off the bed and along the floor (maybe up a wall!). Its really freaky because my body actually tingles and that "yawning" rush in my head becomes very strong. I'm aware that its a dream but the movement feels so real, that I expect to wake up to find myself in a different part of my room. I wake up to find myself in the same position though.

I'm wondering if this is something like a sleep apnea or a sleep disorder thing where your mind wakes up while your body is still paralyzed. However, my body doesn't feel like its paralyzed. It feels like its moving (even though it isn't).

Just always feels like a freaky Exorcist kind of thing. Is this worth visiting a sleep clinic? Can it be something extra freaky (like a Out-Of-Body experience)?

You might want to ask you doctor about being tested for narcolepsy, a sleep disorder. What you're having is one of the symptoms. Sounds like you're either having a hypnagogic hallucination or perhaps a lucid dream (either one can be either frightening, or quite entertaining). Why don't you try "going with it" next time it happens and aim for an out-of-body experience (it's just an hallucination, but seems more real than reality) and you may experience a feeling of true bliss. Definitely see the doctor if you're extremely sleepy during the daytime, though. Most insurance companies cover sleep clinic tests.