anxiety
"I first took Lexapro some 4-5 yrs ago for anxiety. I don't think I was depressed just had a lot of anxiety through stress and if I drank, and I'm not talking a lot, a few beers, I would wake up all edgy, not hungover, pure anxiety, but I was feeling like that quite often.  It definitely worked right away and the anxiety ceased.  I eventually stopped taking it because I felt I didn't need it anymore.  4-5 years later, I was going through some serious depression.  My wife at the time suggested perhaps I go back on; this was definitely depression, much more than anxiety.  Anyway, it was disastrous!  The minute I started taking it, the depression got worse!  The Dr. told me to try to get through it for a week or two and I just couldn't."