Memes

It's one "disease" that's different from most other mental illnesses. It's a personality disorder. So, like, it's not really something you're afflicted by so much as it is you. It's a "cluster b" personality disorder.

It's characterized by an extremely limited sense of identity and a very simplistic black or white way of viewing the world and most things in it. This extends to that sense of identity. So rather than saying "this person must be having a bad day", it's "this person is evil. How could they say that to me? I need to teach this person s lesson. Anything I do to them is okay because they're evil." Or "yeah normally I'd be miffed about someone running down 8 people in their car on purpose but it's George and George is my favourite person. He really seemed to enjoy that. I can't believe I never realize how much I enjoy running down people in my car too".

They'll turn on anyone on a dime and hold grudges forever, gaslight you and themselves constantly to support a worldview where emotion trumps fact, and lie about anything and everything which could indicate to someone else that they have flaws, unless those flaws are serving some kind of purpose in whatever conversation they're having. They tend to be very id-driven, promiscuous, and female. It's ridiculously common to hear people that have dated with it slept with a person with bpd to say that it's the best they've ever had.

It's borderline (heheheh) untreatable, with part of the issue being that they'll lie constantly to therapists. This coupled with the fact that there's a tendency for them to kill themselves mean even getting diagnosed becoming more and more uncommon and even when there is a diagnosis it's often pointless.

There's some evidence of a genetic component and unfortunately many people with BPD suffered abuse as children, sexual and otherwise, so environmental factors play a role as well.

It tends to be comorbid with other more typical psychiatric disorders but isn't characterized by them.