I believe I've had similar episodes, and you describe it perfectly. During a recent hospitalization I seemed to vacillate between elation and devastation several times a day. My turmoil wasn't apparent to an observer, but I was terrified and confused. My pdoc speculated that this was "ultra-ultra rapid cycling," but I thought it might be just mixed? My meds were adjusted, and things evened out pretty quickly; I believe that Geodon made the biggest difference. Honestly, I feel pretty doggone good! I hope you feel better soon.