Nah I am pretty sure sleep has to be messed up for it to be bipolar. Borderline has moodswings but they are much quicker than bipolar. You can get several a day, which is extremely EXTREMELY rare in bipolar. (In fact, almost all doctors would say it simply wouldn't happen) you are diagnosed with ultra rapid cycling if you have 4 or more mood episodes in a year. But bpd causes extreme emotions also. I actually sleep a lot for a manic person, some nights I get 4 hours sleep. When I'm depressed I need 12+