My husband has ADHD and bipolar 1. He describes his ADHD as waves of energy and pure inability to focus and it lasts, it doesn't matter if he's manic, depressed or just "normal" he can't focus even if he wants to but, sometimes he'll get hyper focused on things, apparently an ADHD thing too. When he's focused on something, good luck getting his attention on the first try.
Bipolar comes and goes. There was a really nasty period a couple years ago where he was in a mixed state and going from euphoric to depressed in the same day but, generally it isn't like that for him though it happens emotionally sometimes. I've seen him through and heard of his depressions lasting months, same for manias.
The emotional ups and downs though, I swear that man is more emotional than a stereotypical woman

perhaps it is the interplay between the bp1 and the adhd.
ADHD meds make his moods worse even the non-stimulant ones so, he doesn't take 'em. And too be honest, he's off all meds right now too...watch out world, there's a bipolar couple on the loose with no meds! Hahaha.
But really, if you think it might be bipolar, talk to your doctor about it. Watch out though, that could mean you get prescribed even more pricey medications. Do you feel that is needed?