I have these episodes sometimes, too. It feels like mania because I can't sleep, I'm wired and anxious. And it feels like depression because I'm exhausted, unhappy, and sluggish. The last time this happened to me was about a month ago and my pdoc gave me clonazepam to bring the anxiety down and it really helped so I could focus on coping with the depression. That's the only thing that has really worked for me.