There really isn't a worse or better dx between BPI or II. They are just different. As I understand it BPI tends to be more extreme on the manic side and can have mixed episodes. Hence the term full blown mania associated with it. BPII can be very extreme on the depressive side but not true in all cases. I guess i don't really see one as more or less severe than the other. Both need to be addressed to keep you stabalized. Anyway it is nothing like the difference between a cold and pneumonia. Hope this helped.