How does what happen?


How do we get / develop it?

The truth is, NOBODY KNOWS....

Google it, you'll see opinions and theories, but no concrete facts.


Main difference between the two types is mania. BP 1 = full-blown mania....The rest is pretty much the same, even though our experiences are quite individual.


Still I'm not at all sure I understand your question, so won't type any further incase I've got the wrong end of the stick.