One common personality disorder I see is being extremely defensive when encountering any discussion of human psychology. This comes from a deep psychological fragility.
Classic OAD (Obvious Asshole Disorder)
You couldn't even bother to google an actual disorder! Bah, you insult me :)
>being extremely defensive when encountering any discussion of human psychology
You just have paranoidal schizophrenia and attributing imaginable things to random people you don't like.