im sorry but i dont agree with your interpitation of Derealization and Depersonalization. it is not a short period of time of loss of memory, or loss of attention. its a state of being of things in your surrounding area are like in a dream like state, it feels like your not really here, like your watching the world, but your not really here, and things just arent real.
a couple of years ago durring my whole situation with my health anxiety, phobias, my severe OCD, my fear of being in public, my anxiety, and panic attacks, i was in a hole and couldnt seem to get out.
my brother whom smokes marijuanna on a regular basis came over one night for a visit. i asked him if he had some on him, he said he did. i hate drugs, and never had and use for them asked him if we could smoke one, thinking it might relax me, and maybe make me feel better.....WELL. i got high and i tell ya i was SO paranoid, i was so scare i hated the feeling, i thought i was dying, i thought it was the end of the world for me.
from that moment on for the next LONG time (months) i felt like i wasnt really here, i felt like i was in a dream, things didnt seem real to me. i didnt want to tell my doctor, fear of him thinking i was druggie, or something to that effect. so after a wghile i started doing alot of reasearch on it, typeing in my symptoms into the net, and finding what i have had happen to me, happens, and has happened to alot of people.
i read that the EXACT same way that this happened to me, happens to alot of otheres the same way, and others with anxiety disorders like our also.
there is an awesome site that i have signed up in, its http://groups.msn.com/depersonalizationchatroom/_homepage.msnw?pgmarket=en-us . lots of info, and other who have this ugly situation to deal with also.
i had over come this, and was good for a long time, but it seems like when my anxiety gets so bad for a long duration of time, withought me getting any better, that i go through this alover again.