I think I've heard of BPD as a dumping ground before, and I can see how it could happen. I also got the diagnosis after being "difficult" in an inpatient setting. (I say "difficult" because I thought I was being quite cooperative, but according to the detailed discharge notes I found recently, they apparently thought I was resisting everything.) The diagnosis fits me though. Take a look a reputable websites or books (BPD For Dummies or BPD Survival Guide) and see if you think you fit the criteria. And definitely give the DBT a try! I believe it could be useful for anyone.