I am diagnosed with AvPD, and reading the symptoms there seems to be a lot of cross overs, like with a lot of disorders I suppose. I imagine it must be hard to pull apart the root cause of the symptoms. Personally I don't think anyone has spent enough time talking in depth with me to properly diagnose me. Partly my fault though as some things I feel I can't talk about; fear of judgement, which is ironically a symptom of it.