I think the ultradian/rapid cycling is a separate part of bipolar. Because in itself bipolar is a cycle. I have bipolar 1 with rapid cycling...I cycle a lot. When you have bipolar...you have the cycles of depression and mania/hypomania...but with the rapid cycling its quicker than your average bp cycles. Like...my Dr said she can count that I have had 5 different episodes in 7 month and the qualifications for rapid cycling is 4-5 episodes in a year.