Bipolar disorder causes mood swings that include emotional highs and lows (depression). When you are depressed, you may feel sad, and things may not make you as happy as they once did. When your mood changes in the other direction, you may feel very happy and full of energy. Mood shifts can happen only a few times a year or as often as several times a week.
Gain an understanding of the condition to promote a supportive environment.
Source: Mayo Clinic
