I have bipolar II and my upbringing was emotionally, and sometimes physically, abusive. I believe it triggered a lot of my irate behavior, deep depression, and poor self-esteem while growing up. I spoke to one person with bipolar and she believes certain environments trigger bipolar episodes, so having an abusive upbringing could stir the symptoms, I believe, at an earlier age than someone who had a kinder upbringing. That's my belief, anyway.