Trauma is usually a cause for bpd and tbh I don’t think I have any trauma, thinking back on some moments in my childhood I can feel like it was somewhat traumatizing like my friends lying to me when I was 6 years old or so, may sound a little over exaggerating but that’s how it feels to me. And I wonder a lot if I have repressed memories that have caused it, not that my parents have ever told me anything but sometimes it feels like something horrible has happen in my childhood but I can’t put a finger on what that would be?