But BPD, in this country (because you're quoting the ICD-10 I'm assuming youre not in the US), what you just listed are distinct disorders all different from one another, not BPD. Many symptoms can and do overlap with mental and emotional disorders, but BPD isn't a combo of a bunch of different disorders. The symptoms, at least according to the DSM, are pretty specific. It's complex because like you say it's so hard to treat.

Take me for instance, I have social anxiety, GAD, ADD and a mood disorder. I also have some traits consistent with BPD, dependent PD and Avoidant PD. But with all of them it's not enough to be diagnosed. There might be varying levels of degree, but if you really do one of them it's pretty severe.