Short answer: it was when I was10 initially seen by a child psychologist because I was extremely shy and quiet, but 38 when I was finally treated for depression.

Here's the longer version:

The very first time was when I was 10. I was 2 years into being physically abused and was having trouble with everything. I had a bunch of sessions with a child phycologist. He said that something was up with me but my parents wouldn't hear of it and things ended there.

Years later when I was 38, my regular doctor referred me to the pdoc I'm seeing now. She was the first to take my depression seriously. I was seeing my regular doctor for years before that for anxiety that progressed to depression and was treated with Ativan and antidepressants.

I was treated with antidepressants by my pdoc for years and nothing worked. I had no idea my ups weren't normal and my pdoc didn't really do anything about them for years. It was only once in went into full blown mania for a few weeks that she referred me to a special clinic where they determined that I'm bipolar.

I was in therapy from age 44 and we determined that I've been depressed since I was 8, which is when the abuse started. My T said I likely also had PTSD due to traumatic events before I was 8.

Long winded answer I know.