I was misdiagnosed with BPD, in my case substance abuse was the correct diagnosis. It was talked about me...
I guess treating symptoms only heals the symptoms, not the cause?
Though I also guess it's the best we have at this point, so you're right.
My logic behind this thread was that, to treat the cause, a better system is needed.
I'll use PTSD as an example. While it is USEFUL to treat symptoms - learning to wash your clothes and live routine lives, in order to get a better quality of life - a lot of people still never heal. The underlying cause of PTSD, what is that? They may find out that it is - for example (hypothesis following) - HPA-axis imbalance due to exposure to stress over time, knocking this stress-axis out of balance. We don't know too much about how to treat such an imbalance. As in, if anger issues are caused by HPA-axis imbalance, then an easy treatment for anger issues would be diagnosing through brain scans and then fixing the imbalance. Voila - PTSD gone, and all the symptoms including clothes piling up and anger management issues as well. (it's an example. We don't know the underlying cause of PTSD for certain, and we can't diagnose this way easily, so we can't do this today, but this development happens fast).
Treating the symptom - learning to control the anger issues may of course help in the balance of the HPA-axis also, but it is a slower treatment when done this way, and anger may not be the only consequence of a disorder.
I'm sort of thinking that in the future we'll know better how to treat causes directly, by diagnosing better, say based on brain scans as in the hypothesis/example above. And then maybe we could directly heal the HPA-axis balance through adjustment of this balance and the anger issues along with all other symptoms would just be gone. Instead, today, we treat symptoms and hope that will cause the imbalance to heal by slowly training the imbalances back into balance.
The same way, it may be easy to heal cluster Bs, whatever their imbalance is, and if their underlying cause is the same (as I theorized in this thread), then that kind of a system that I proposed would be easier. But this is obviously some day in the future. For now the diagnostic system of symptoms is the best we have. So I agree with those saying it is how it has to work. I hope it'll be better soon, though.
Maybe I'm getting too imaginative here....:p