The first question that popped into my mind was, "Who are these people and are they qualified to make such a judgement about you? I would hazard a guess that the answer is no, they probably have a cousin who has BPD and are therefore, internet experts.
That is interesting for me though as BPD was one of the incorrect diagnoses I received growing up; I also was thought to be a 'Manic Depressive' (before the switch to bipolar came in).
Looking at some of the listed criteria for a diagnosis I can see why they made the mistake they made, but had they bothered to dig a little deeper then they would have realised it wasn't correct. I have told this tale before on another thread, but when I challenged the Psychiatrist saying I didn't accept the BPD diagnosis, he smugly replied that this is exactly what a person with BPD would do, ergo..... I so regret not slapping him!
One of the issues I found with that diagnosis was that they were then able to shove me into the box labelled, "Unfixable" and not then have to offer me support as it would simply be a waste of everybody's time. It is also a testament to the poor standards of psychiatry we still suffer from. Given the reading I had done, I knew it wasn't that but had to sit for a couple of decades with the wrong diagnosis and the best support on offer being 6 sessions of CBT.
It was only years later when I was able to go private and I got two separate independent diagnoses of Asperger's (needed to be sure) was I able to relax in my own skin. There is overlap with the ways of being, but if you are worried then maybe you should do some homework of your own? A book I read is called, "Sometimes I act crazy: Living with BPD" by Kreisman and Straus - they also wrote another good book on the subject called, "I hate you, Don't leave me!"
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Moomintroll sighed. He felt sad even though he had no real reason to feel that way.