ok. So you can get it from grandparents, aunt and uncles and cousins, nieces, nephews as well as parents and siblings, any blood relations. Just trying to work out who could have passed it to me if that was the cause. I know that there are other causes also but it was funny when i told people in my family that hav bipolar they got guilty all of a sudden and said don't look at me i didn't pass it to you.