tyrellsOwl - seriously though...
...it sounds like you are having episodes of a 'dissociative state'. (Try 'Dissociation' on Wikipedia.)
It's also really common for people to experience this when given Ketamine - by which I mean patients who have I have given it for severe fractures when morphine doesn't do the trick, as opposed to people taking it for shits and giggles. (Although I guess it might be similar for them too, I've never tried it myself.)
I experienced dissociative states as a kid although I only figured out what they were - and was able to put a name to them - as an adult.
(emadex thinks the world will end on, Tue 26 Jul 2011, 18:27, 2 replies)

Thanks, I will read up on this when I get home from work.

I have never tried Ketamine, nor any other strong opiate, so I have no idea why I would be experiencing them..
(tyrellsOwl, Wed 27 Jul 2011, 13:09, closed)

en.wikipedia.org/wiki/Derealization
en.wikipedia.org/wiki/Depersonalization_disorder

These seem to fairly closely describe my symptoms.
"Depersonalization disorder is often comorbid with anxiety disorders, panic disorders, clinical depression and bipolar disorder."

I do have an (albeit undiagnosed) anxiety disorder. I often go around feeling anxious and worried (sometimes for a reason, other times not) and am prone to panic attacks (Though they have gotten better).

I just skimmed these articles now on my lunch break but I will read more this evening.
(tyrellsOwl, Wed 27 Jul 2011, 13:15, closed)