You are exactly right..bipolar IS a chemical imbalance that can almost always be treated with meds. It sometimes takes a while and trial and error to figure out which meds, but once that's figured out, you're good. Sometimes the depression or anxiety of BPD is treated with meds, but the underlying cause of those symptoms, the BPD, can't be. It's learned behavior. It takes a lifetime to learn it; it can't be unlearned over night. That is why BPD has such stigma and many look at it as being incurable. You can't put a "med" bandage on it and make it all better.