I have been working on BipolarType since the early 1980s when I was diagnosed as bipolar at around the same time I learned about personality type.
The BipolarType theory asserts that “being bipolar” is genetic, and causes the individual to experience a more pronounced cycle, but that different people have different personality types, which affects not only how their illnesses present, but the treatments they need. I got my bipolar genes from my mother, but my symptoms were so different from hers that it was years before I was properly diagnosed — even though we knew that bipolar disorder runs in our family — and the treatments that worked for her did not work for me.
The BipolarType theory further asserts that if you know what your BipolarType is, you will know what behaviors to focus on wherever you are in the cycle (manic, depressed, or mixed state). That is, the BipolarType provides a list of four behaviors that you can always do, that you always enjoy doing, and that are neither unhealthy nor unbalancing.
The theory is scientific (it is falsifiable) but it has not been validated by the psychiatric, psychological, or type communities.
I am sharing it on the web because it helps me. I hope that you will find it useful or at least interesting.