Bipolar disorder — sometimes called manic-depressive disorder — causes mood swings that range from of the lows of depression to the highs of mania. When you become depressed, you may feel sad or hopeless and lose interest or pleasure in most activities. When your mood shifts in the other direction, you may feel euphoric and full of energy. Mood shifts may only occur only a few times a year, or as often as several times a day. In some cases, bipolar disorder causes symptoms of depression and mania at the same time.
* Low mood, intense depression and despair.
* High or ‘manic’ feelings of joy, over-activity and loss of inhibitions.
* A 'mixed state' such as a depressed mood with the restlessness and over-activity of a manic episode.
Bipolar disorder often develops in a person's late teens or early adult years. At least half of all cases start before age 25.1 Some people have their first symptoms during childhood, while others may develop symptoms late in life.
Bipolar disorder is not easy to spot when it starts. The symptoms may seem like separate problems, not recognized as parts of a larger problem. Some people suffer for years before they are properly diagnosed and treated. Like diabetes or heart disease, bipolar disorder is a long-term illness that must be carefully managed throughout a person's life.