Ever since I can remember I haven't had the best attention span but I had usually been able to concentrate enough to watch tv, read, tlk to someone etc. Well the past couple years it's gotten worse and worse to where I'm getting mostly C's and D's in school, when I used to get A's B's and maybe a C. Well during the whole month of August and into September I was dealing with a lot of depression, I wasn't suicidal but it was still bad. My big problem was not being able to concentrate and being super tired during school. Well I was depressed for a little bit, about 2 weeks then I was normal, then depressed (worse this time) then I became "higher" than normal, and now I'm feeling normal again. Well my attention and concentration problems have gotten super bad. I can't sit down to read, it's hard for me to follow conversations with people, and I started day dreaming while driving the other day and almost drove off the road!! So my question is..could ADD have caused my depression? One thing that really makes me sad is not being able to concentrate then getting bad grades and disappointing my parents. Or is my inability to concentrate after affects of depression?? I'M SO CONFUSED!! Please help.