It's hard for me to say when bipolar came out...I've had emotional issues my whole life. Horrible anxiety as far as I can remember. Depression from age ten, but I had a reason - my dad died. In fact that drove a lot of my symptoms I feel. I didn't have true bipolar symptoms that could not be attributed to anything else until age 25; at least that's how I feel. But I've had so much trauma in my life it's hard to untangle it all. Looking back I see things that could be bipolar much earlier...