Nope, LaughinMan, I do not agree. Not at ALL.

AniManiac said so much of what I'd say, so, I'll just say echo.

Point by point, I hardly know where to start, but here's a try at keeping it simple:

Same disorder?!?! I have BP. For sure, clear cut. I did not have ADD/ADHD traits at all as a child. In fact, as just a quick example, I was very focused and not at all disruptive. (And before you even go there, my BP presented at 20, not childhood.)

Repressed emotions causality?!?! My sister and I were born back to back. So any repression time frame would have been virtually simultaneous development-wise. We had the same experiences (and yes, they were repressive) growing up and have discussed these at length. She has never had ADD/ADHD nor does she have BP (not even close on either). As stated before, there was no ADHD for me either. Have always been emotionally sensitive. And raised in a repressive environment. Even with both of these factors you posit, again, no ADHD.

I'm not saying that my sister's and my experience is universal. I just felt compelled to present a real life example that completely contradicts what you have posited. Which is completely theoretical, with no stated scientific basis whatsoever. I'm sorry, but I think gross overgeneralization is an understatement, and that the notion does not, in fact, stand.