Hi. Sorry you are having this issue. I believe they call this derealization. Here's the psych definition: Derealization (DR) is a psychiatric condition in which a person’s perception of reality is altered in such a way that everything feels unfamiliar or unreal. Here's an article on it: https://www.healthline.com/health/mental-health/derealization-anxiety-symptom-makes-reality-melt-away#5. Do you have a therapist or anything like that?
For the most part, derealization or depersonsalization aren't diseases on their own, they are usually symptoms of other diseases, usually depression and anxiety and other mental disorders. You haven't said if you have any of these, though you are writing on an anxiety forum. But that doesn't necessarily mean what you're feeling is a disease state or part of a disease state. Sometimes people just have periods of their lives where suddenly nothing makes sense. This can be caused by not being happy with your life or your career or a relationship. It's also, by the way, accurate -- life as we know it in "civilization" is completely artificial -- it's made up. Real life is hunting and gathering and reproduction and survival. That's the nature of the human animal. When humans create a civilization, they make it up. So either you are suffering derealization for some reason, or you're seeing clearly for some reason. Philosophers and writers and filmmakers and other creative people often think like this. It makes life difficult, but it doesn't make it a disease necessarily. I have no idea which category you're in and don't know what kind of person you are or what you're going through right now that might have brought this on. So it might be a disorder you want to do something about, or not.