im not diagnosed...some of my moods are short lived (a few hours) and i can be different "people" all in the same day. happy as can be, crying, laughing, throwing things...and then usually by the ene of a particularly moody day...tired! but i also have moods that stick and last a bit longer (a few days or so)....whether up or down. i think im going through this now (down)...its been about 4 days so far.