Bipolar disorder is a brain disease or mental illness, also known as manic depressive illness characterized by extreme shift in mood that causes difficulties in performing day-to-day activities. The observation had determined changes in mood, energy levels and activity levels along with ability to function any task. A patient suffering from BD may feel sudden mood swings like extreme rise in mood or emotions (mania or hypomania) and extreme low level (depression).
A clear mood change is experienced by patient such as hypomania feeling of euphoric, full of energy or unusually irritable and hopeless periods, very sad or down feeling and behavior as depressive episode. It
affects person in every aspect of daily routine as moods swings are influencing in sleep, energy, activity, judgment, behavior and ability to think. Depression occurring in such disease state may last for at least two week of time period whereas other episode like mania or hypomania can last several week or month with periods of stability in between.