I experience derealization on a daily basis. It's been my constant personal hell for more than twenty years now. It all started in high school when I had to deal with the torment of bullying. Also, at the age of 14 I was moved 1,000 miles away from where I had spent all of my life prior to that. I never was able to socially adapt to the new situation and so I shut down and became severely depressed. Well, in high school, no one knows how to leave the oddball alone, so my torment began. I went into a severe depression and avoided everyone. Eventually, I had a complete nervous breakdown about a month or two after graduation. I was not into drugs or anything, so it all stems from my severe depression and, I think, PTSD. To this day it has never abated and only seems to get worse and worse. It's almost led me to suicide several times as it can be unbearable to deal with.
So, with me, you have derealization, major depression and anxiety. I also suspect Asperger's in myself as it is a possible explanation for why I developed the other psychological issues I have. I had Aspie traits before my move away from my hometown and they materialized in my limited relationships as a child. I did have to deal with bullying in elementary school, but it was limited since I was mostly in small church schools with class sizes of 5-10 students at the maximum. Every time I went to a school with larger classes, I did terribly. Several adults picked up on my social issues and organizational difficulties but no one ever suggested autism, or if they did, my parents don't remember it. I do know that my mom would not have me assessed by the school as she did not want me labeled and thus put in a special school. I don't blame her and understand her reasons. Her exposure to learning disabled students was not positive and she didn't want me to be seen as one of them.
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Uncertain of diagnosis, either ADHD or Aspergers.
Aspie quiz: 143/200 AS, 81/200 NT; AQ 43; "eyes" 17/39, EQ/SQ 21/51 BAPQ: Autistic/BAP- You scored 92 aloof, 111 rigid and 103 pragmatic