Like many human conditions, medical, psychological, or otherwise, bipolar disorder was at first little-known (then called manic-depression), then described poorly in pop culture, then evolved in the collective mind to mean something different from what is it. Let's get back to the basics with Life Noggin.
Many folks display symptoms that might lead you to believe that you're "just a little" bipolar, but while there's a spectrum of symptoms we all experience at one time or another, people who suffer from bipolar disorder suffer profoundly, and should seek help. -via Laughing Squid