I'm certain what you're experiencing is anxiety and depersonalization and that calmness and mental health recovery is the only existing solution for those two things. There are a few people in this community who had depersonalization due to a physical illness. In my experience, severity of depersonalization doesn't seem to indicate whether the syndrome has physical or mental origins. Being stuck in a cycle of anxiety and not believing mental health problems could produce such symptoms is a hallmark of mental illness. It's preferable to being delusional in which case you wouldn't believe anything is wrong with you at all, instead blaming everything on China or the CIA.