Gosh, nearly started this thread myself last week!
DBT strikes me as invalidating rubbish - perhaps it depends on how it's done though. I read the DBT manual and it's all stuff I KNOW, but the problem is I don't FEEL it, I actually feel quite manipulated by people (whereas I try to be honest) and just exhausted keeping up the act. And my main problem is and has always been just feeling overwhelmed and terrified, feels like hands squeezing the breath out of me as I feel so trapped and scared and everything spins and fills with all the bad things and all the times I've felt trapped, and just overwhelming shame at daring to exist and not be perfect (though I fucking try!) And I'm surrounded by people who aren't the perfect DBT-manual-people but they are happy, so I'm thinking DBT is missing something!
I told the GP and others the above when I first went for help a decade ago - no severe self-harm, no suicide attempt, just me begging for help. I might have Aspergers, as it turns out - but no professional has ever suggested that or done more than just blame and invalidate me.
I was once in the GP's, about 10 years ago, begging for help. GP was lovely until she got my notes up on screen (which I could see). There was a sort of dialog box that had a 'warning' about me on there! I can't recall it precisely but it was pure stigma - said something like "attention seeking". She hurriedly turned the screen away before I could read it properly. Anyway I kept begging for help (at this point I'd been officially taken on by the team but they didn't DO anything) and she was just cold, telling me to get out. Suddenly lots of people rushed in and grabbed me, turned out Evil GP had pressed the panic button! I got struck off and barred from registering with any GP's in the area, for "violence". There was no violence, apart from the emotional blows to my already fragile soul. Ha. Look at that BPD overdramatisation 
I was also barred from council housing (including emergency hostel) as they told the depatment I "wasnt mentally ill" and just demanding. I even tried to do some voluntary work designed for people with MH issues and my CPN wouldn't sign the form to confirm I was under MH services.
I can't write more or it will identify me, but suffice it to say I sensibly and politely asked for help after many years (teenage) of struggling, and they took my problems and compounded them, adding layers of fear and trauma, and a paper trail that lost me my vocational career. I have nightmares and intrusive memories about the things that happened AFTER asking for help.
Oh, and finally - for those asking about what should be done, or what is it we want? I don't know for definite, more a suggestion... but the general population sems to have an expectation of psych treatment/hospital, so I think maybe we want/need that? I mean, the idea of a hopsital being the place you go when it's all getting too much, where you could speak to psychologists and do therapeutic things and work through what you're feeling in a supportive environment. A safe haven for nurturing and re-parenting. I know hospital isn't like that, but I think subconsciously that's what people are after. Given the higher level of psychological awareness in the general population over time, it's a bit of a shock to see people essentially being labelled "hysteric" by services as if it we the 1800's. Massivey invalidating and hysteria-inducing in itself!
Anyway, I digress, a lot of the problem is that society has become too individualistic whereas a lot of people with the unfortunate BPD label have needs that wouldn't have developed if they'd had a wider comunity to draw on growing up, and perhaps wouldn't be so apparent in a caring community now. So it falls to psych services. And always - more so now - overstretched services are the opposite of the nurturing environment so many are crying out for. And I believe it is this that is essential before healing/re-learning can take place.
It all reminds me of a comment on a blog I read ages ago, something along the lines of "What helps BPD?" This bloke has commented saying tht he thought a loving, caring relationship was the best thing. He wrote that his ex-wife had BPD, and she was never more stable and working through things than when she was with him. I think he mentioned cuddling her when she had bad memories or something like that.
I've written a bloody essay here, oops... So I'll just say, trauma is not dealt with well by psych services, or even recognised in many contexts.