Is it posssible to have these traits described without being BPD? I've never been diagnosed with that, but I fully relate, i think, to validation affecting me significantly at a way higher rate than most.
When i'm invalidated, i still remember and am hurt by every single person who's ever inalidated me, especially if they were in a position of power or supposed to help me and i was supposed to trust like mommie dearest, therapists, etc. It sticks with me so strongly, especially when they're confident in what they say, even if others confirm they're wrong for saying that. it takes a long time for me to come around and trust when people validate that those people were stupid, wrong for that, had no idea what they were talking about, proven wrong, it takes alot of assurance for me to not have that experience stick to me like a tick.
i hate that i'm this way and can't just listen when people say "ignore them, they don't know what they're talking about, don't listen to them, they have no business talking about that, well that's wrong of them to say as a therapist, no therapist should ever say that, that's very outdated views about ptsd, they clearly don't know what they'e talking about, try to forget them, there's nothing wrong with you wanting xyz, there's nothing wrong with you not wanting xyz" etc.
So far, i've only been diagnosed with ptsd, i probably have c-ptsd, depression, and that's it. Though i can relate to what a few people on this thread have described about being really affected by invalidation and it sticking to you.