My sibling had some mood and anger issues, which she mostly directed only to our mother and her spouse, and she could crack under pressure/stress a bit, but we all had decent relationships with her. . . . Around a major trauma that occurred in my family about 18 months ago, she began behaving in an extreme way.
Hi there,
Your post generates a couple of questions for me. May I ask, how old is your sister? Many people here see "full blown" BPD behaviors emerge in early adulthood. I have some theories about why that might happen, but the main one is, in early adulthood, people start to face adult-level pressures and relationships, but if they don't have the emotional maturity to handle it, they struggle mightily with the transition. My theory is that when pwBPD start to feel like they are "failing" at adulting, they really lash out. Worse, if their outbursts are "rewarded," such as with attention, help, free housing, money, etc. from well-meaning family members or significant others, then basically the family system is set up to perpetuate this sort of dysfunctional behavior. She learns that if she makes a huge fuss, she gets what she wants, and so she continues. This actually becomes part of her "identity" as an emerging adult: that she's the victim of endless slights and "traumas," and she lashes out with furious anger to remind you. Further, it's like she never got the memo that adulthood is about being responsible for oneself. She's convinced that everyone else is responsible for ruining her life. Even if she's doing OK on paper, she's furious and extremely jealous of others, while at the same time being extremely demanding and needy. Does that sound about right?
The other elements of your post that sound like BPD are (i) a history of moodiness and anger issues, (ii) intense preoccupation with feelings of "abandonment," and (iii) apparent lack of empathy for how others are hurt by the things she has said or done.
My other question is, what was the trauma that was supposedly the trigger? I'm asking because the pwBPD in my life would describe all sorts of ordinary life events as "trauma." By the way, I'm not the only one who put "trauma" in quotation marks--her therapist did the same exact thing! That's because she would experience some ordinary things much more intensely than others: the stress of moving, going away to college, having a fight with a family member or roommates, etc. She characterized normal disagreements as "bullying." Someone taking half a day to respond to her text was "abandonment." And I think her telling of events was highly suspect. At first, I gave her the benefit of the doubt, but over time, I'd usually learn some details and discover that the fact patterns didn't line up. Anyway, after reading these boards for a few months, I noticed that it's very common for pwBPD to describe several past relationships as "abusive," and yet many posters here wonder if that is really true, because the "abusive" person is typically the pwBPD herself. Now, I'm not saying that I don't sympathize, because the pwBPD experience life as a seemingly unending series of traumas, even real-life traumas, which would be devastating. And it would be self-protective to develop a fight-or-flight response as a result. I guess I'm saying that if your sister feels traumatized, that's unfortunate, and she's probably having a fight-or-flight response right now. "Flight" might be cutting you out or blocking you. Fight is lashing out and accusing you of things, sometimes things that never even happened.
One other possibility came to mind here. If your sibling did experience a significant trauma a while back, she might be self-medicating with illicit substances. The pwBPD in my life did that, to get some respite from the pressure of early adulthood. However, in her case, I think the substance use disorder made her BPD behaviors much, much worse. If she had trouble with motivation and tolerating discomfort in the past, when using, that became a whole lot more difficult. If she had trouble focusing because of intrusive thoughts in the past, with substance use disorder, her ability to focus was flushed down the toilet. Accordingly, her young adult "functioning" became severely compromised, feeding her sense of inferiority and incompetence. It became a pernicious, negative spiral. I'm wondering if your sister might be experiencing something similar.
In sum, in the case of the pwBPD in my life, the BPD was "hiding" within her and started to emerge as she struggled to make the transition to adulthood. A couple of negative experiences at college--not getting along with roommates, struggling academically, not really fitting in, trouble figuring out a major, not finding a boyfriend--drove her to use marijuana daily. With that, she went down a very negative spiral.



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