No, it's in your head. It's not a disease or a virus. It's a state of mind. You can call it clinical or scientific, but it's something everyone's gotta deal with.

Tell me, what's the difference in taking some of these happy-pills and drinking alcohol? They are both drugs that can be taken to acheive a certain state of mind. Which is fine. But it only covers up yourself. It doesn't cure- only you can do that. Otherwise, you could give a psycho serial killer some morphine and 'cure' his 'illness'. Or you could shoot a tranquilizer into a raging rhinoceros and 'cure' his problem.