I don't either hun. I'm just now opening my eyes to all of these disorders myself. Major Depression Disorder, Bipolar II Disorder, there is a significant difference I believe. I've been trying to educate myself because for 6 year's I was lead to believe I was Bipolar I, which has mania, and I wasn't even manic! I guess that's my fault for not educating myself and expressing to the doc that I was just severly depressed.