These people suffer from advanced mental disorder, probably due to a traumatic event in their youth
That's the cliche, but I'm cynical enough to believe that the mental disorder came first and the stereotypical "traumatic event in their youth" was usually made up or self-caused.
That's the cliche, but I'm cynical enough to believe that the mental disorder came first and the stereotypical "traumatic event in their youth" was usually made up or self-caused.