The person also feels wonderful - they are euphoric out of proportion to reality. But instead of turning this energy into efficient and productive work, the person is usually inappropriately focused, irritable, distractible, and unable to show insight, understanding or good judgement. They become deluded about their power and ability, and, for example, take risks or spend a lot of money they don't have. During depressed periods, there is an overwhelming sense of sadness and hopelessness. They may feel guilty and as though they are a burden to everyone.
Some people feel very anxious, and many contemplate death.
The cause of bipolar disorder is unknown but various factors seem to contribute to the imbalances in brain chemicals thought to cause symptoms. It can take some time to get the right combination and get a response. Those people who learn to understand their condition, find good support from friends or family, recognise mood changes early, structure their life carefully, and avoid other triggers such as lack of sleep or recreational drugs and alcohol, tend to do better. Visit our extensive Ask the Doctor library of all previously asked questions and answers covering a wide range of topics. Full A to Z listing Category listing Keyword Search using the box on the right .