Bipolar disorder (formerly called manic-depressive illness or manic depression) is a mental illness that causes unusual shifts in a person's mood, energy, activity levels, and concentration. These shifts can make it difficult to carry out day-to-day tasks.

loud speech. talking about subjects in a disorganized manner. talking about inappropriate subjects. not being able to speak fast enough to keep up with thoughts.

During a manic episode, you might impulsively quit your job, charge up huge amounts on credit cards, or feel rested after sleeping two hours. During a depressive episode, you might be too tired to get out of bed, and full of self-loathing and hopelessness over being unemployed and in debt.

People with psychosis typically experience delusions (false beliefs, for example, that people on television are sending them special messages or that others are trying to hurt them) and hallucinations (seeing or hearing things that others do not, such as hearing voices telling them to do something or criticizing them).