I'm right in the middle of what used to be called "atypical depression". I eat too much, sleep too much, have trouble getting motivated etc. but I can also enjoy the good things that happen, and the depression usually goes away in the afternoon and evening. I have never been diagnosed with SAD by itself, but my pdoc says it's part of my bipolar seasonal pattern. Whatever it is, at least it's not a suicidal type depression in which every fiber of my being longs for death.