The dramatic mood episodes of bipolar disorder do not follow a predictable pattern. Depression does not always follow mania. A person may experience the same mood state several times -- for weeks, months, even years at a time before experiencing a remission or change in mood state. Also, the severity of mood phases can differ from person to person.
The periods of depression can be equally intense. Sadness and anxiety affect every aspect of life -- thoughts, feelings, sleeping, eating, physical health, relationships, and ability to function at work. If depression is not treated, it often only grows worse until it may suddenly go away. However, there may seem to be no way out of this overwhelming mood.
Bipolar I disorder (pronounced "bipolar one" and also known as manic-depressive disorder or manic depression) is a form of mental illness. A person affected by bipolar I disorder has had at least one manic episode in his or her life. A manic episode is a period of abnormally elevated mood and high energy, accompanied by abnormal behavior that disrupts life.
Most people with bipolar I disorder also suffer from episodes of depression. Often, there is a pattern of cycling between mania and depression...
These depressed feelings have been described this way:
Depression:I doubt completely my ability to do anything well. It seems as though my mind has slowed down and burned out to the point of being virtually useless... . [I am] haunt[ed] ... with the total, the desperate hopelessness of it all. Others say, "It's only temporary, it will pass, you will get over it," but, of course, they haven't any idea of how I feel, although they are certain they do. If I can't feel, move, think, or care, then what on earth is the point?
An episode of depression involves five or more of these symptoms most of the day -- nearly every day -- for two weeks or longer:
Thoughts of death or suicide or attempting suicide
In addition, people experiencing a major depressive episode may also feel anxious, irritable, and tearful or have trouble making everyday types of decisions.
When a person experiencing a depression has psychosis, there may be delusions of guilt or worthlessness -- perhaps there is an inaccurate belief of being ruined and penniless, or having committed a terrible crime or sin.