In the long term, the will to act is gradually sapped. In manic depression, apart from the symptoms of depression, there is also corresponding excitement, passion, restless movement and other unsteady emotions. The highs and lows are at clearly opposite poles.
至於躁鬱症，則除了憂鬱的症狀外，還會相對的出現興奮、狂熱、躁動不安等情緒，高潮、低潮非常明顯的兩極化現象。