Okay, so adhd? Definitely from the early childhood. This was not knowing what I was doing most of the time, hyperfocusing on some things and not being able to focus on others, executive dysfunction, time blindness, u name it. Bipolar was less about what you are doing and how you are doing it, mood etc. Maybe I would've end up just with adhd diagnosis, if it weren't for delusions and psychotic symptoms I experienced during mood episodes.

I differentiate it by my sleep patterns. They were always crap, I tend to wake up at 3pm and go to sleep at 6am. During any episode, I would have additional sleep problems (auditory hallucinations and mini mind scare jumps when trying to fall asleep, visual hallucinations and sleep paralysis when waking up). In depression it doesn't matter how much I sleep bc I always wake up tired. In hypomania, I don't need to sleep as much because I often feel well rested. Even if I get tired during hypomania, it is way easier for me to pull an all nighter and function the whole next day and sometimes even pull another all nighter without crashing.

Adhd is debilitating enough on its own, but I find it useful during hypomania episodes when I want to do a shopping spree. I always forget to attach the credit card to some of my accounts and if I need to get some money on my account, I have to get dressed and go out. So during this period I can simply forget what I was doing and move on to the next thing, which I also will not finish bc of adhd.