I am diagnosed as "ultradian cycling" or more simply, ultra-rapid. I've always been this way although I've become even more rapid in the past few years. It's changed a lot since I was a teen.

Anyway, all through my late teens and 20s I would have about 2-4 weeks of depression followed by 1-2 weeks of mania/hypomania. I remember especially when I was around 18/19 years old driving people to calling me "crazy" and thinking I was off my rocker with how bouncy I'd get. I had no idea what this was at that time. I just thought I was a super bouncy social butterfly sometimes and depressed when I wasn't.

But, in the past 3-4 years it's changed. My cycling has shifted and now it can shift at any time. The most I've ever shifted in one day is around 4 times, but in those instances usually one of the shifts is caused by a trigger. But, I shift for no reason at all most of the time. I'll wake up depressed, feel like hell, and then 3 hours later I'm manic and raging for no reason at all. And then later in the day I'll shift again. It depends on the day.

Usually I'll be in the same mood for 2-5 days, which seems to be my "normal" pattern now.