Could dissociation/derealization have a physical cause? I just made an appointment with a GP for this afternoon because I feel so out of it I'm worried I may have a neurological condition. I don't have any insurance so this should be a fun experience but I'm tired of feeling this way. I also am worried because even though I'm only in my thirties my sister had a cancer scare when she was only in her thirties. I just hope they give me an honest going over since I don't have any insurance.