0471名無しさん@お腹いっぱい。2018/08/30(木) 21:29:49.92ID:WDMDksjD Bipolar II disorder is not a milder form of bipolar I disorder, but a separate diagnosis. While the manic episodes of bipolar I disorder can be severe and dangerous, individuals with bipolar II disorder can be depressed for longer periods, which can cause significant impairment.