I asked my therapist this question just last week....whether I am truly bipolar (I might have had a handful of short hypomania or was I just giddy because the major depression lifted.) That said, I'm on a roller coaster and asked if the majority of my pain was from a chemical imbalance (I'm on many different and heavy meds) and how much can be contributed to several severe traumas in my life. Her response: the traumas. I'm happy to say that I'm bipolar 2 if I really am but all I deal with the majority of the time is severe depression which ebbs and flows. I'm also deeply impacted by SAD. I couldn't quite honestly tell you what I am but I wonder. When I take bipolar tests, I don't come out as bipolar.