I'm not sure about diagnosing here, so I'll simply let you know about my depression. It fluctuates. There are some days when I feel like I'm on the other side of it, but others when I slide into the dark oblivion. For me, I'm certain that it is depression. I have never had a manic episode, never a mixed episode, and never been hypomanic. oh, and on my bad days, I hole up in my room, and stare at the walls. At those times, the closer I can come to zero social contact, the better...Hope that helps.