florescent lighting definitely affects me. I get that sense of unrealtiy, derealization. I think with me at least the whole florescent lighting might just be triggering from something stressful, schooling, hospitals, labs, etc. The lighting is not natural at all and it's creepy.
I read somewhere that it's very common for people who suffer from anxiety espeically forms of dissociation to be affected by fluorescent lighting.
I read your last post and it does sound like you have something more going on.