Years ago I was diagnosed with BPD. This was before I was diagnosed with Bipolar. I did show most of the symptoms and have a trauma history so it seemed to fit at the time. Later I was diagnosed with Bipolar 1 after a clear manic episode. I have had the same T throughout all of this and he believes I have had Bipolar since my teens and may have also had BPD. He thinks the BPD like symptoms I used to have were treated with intensive therapy. He actually specialises in BPD and that is why I was referred to him 10 years ago. He said it is a grey area between BPD and Bipolar at times so he still ins't completely sure if I had both or if it was just the PTSD and severe Bipolar with rapid cycling and mixed features at play. All I know is that my abandonment issues are gone and I am much more sure of myself and stable in the relationships I do have. Only therapy and a lot of working on myself could have achieved that. Not meds. With the Bipolar it is the opposite. Only the right meds got me stable. therapy helped me cope but without those meds I would still be in an episode.