I believe I have a low level of AVPD, always have since a young age- it's usually a result of severe social anxiety. I've worked on it over the years and it's gotten better to a degree- I understand the fnatady world- I love escaping into books and shows and movies and even lucid dreams- but I've never experinced what you're talking about. Perhaps a psychologist would know more. I majored in the subject in college but all this makes me think of is perhaps you have shizotypal disorder? I have a mild form of it myself, but more in terms of ridiuclous thoughts that I know aren't true. This sounds similar, you're having these ful on fantsies that you know aren't real, but are having trouble controlling. You can probably be prescribed a low dose of something to help relivefe these symptoms if they are getting progressively worse in terms of being invasicve to your everday life (which is what it sounds like?) I don't know, just a thought.