I was almost diagnosed with BPD when I was a teenager. At one point I fit all 9 criteria, and I was doing pretty badly. I was also severely abused by my parents. My current diagnoses are autism and Bipolar, although I wonder about the Bipolar at times. I definitely am autistic, as I've showed symptoms since I was about 3. I know for autistic females, being severely abused can cause either mimicking of BPD or actual BPD.
But sometimes, I'm just all around 'effed up. Can any of you shut off your empathy? Like, completely shut it off, hurt others if you like, and feel absolutely nothing. Is this a product of abuse? A lot of "higher functioning" autistic people have very HIGH empathy, but can't express it. Due to my childhood, I'm good at analyzing others, but it's also sort of a special interest. I'm not sure if this has anything to do with empathy, or if it's the BPD.
Note: I usually don't shut it off, and I can turn it right back on. But I seriously think I'm kind of dangerous when I do that, so I just don't do it...