Symptoms of the Depression Phase. The symptoms of depression experienced in bipolar disorder are almost identical to those of major depression, They include:
- Sad mood
- Fatigue or loss of energy
- Sleep problems such as insomnia, excessive sleeping, or shallow sleep with frequent awakenings
- Appetite changes
- Diminished ability to concentrate or to make decisions
- Agitation or markedly sedentary behavior
- Feelings of guilt, pessimism, helplessness, or low self-esteem
- Loss of interest or pleasure in life
- Thoughts of, or attempts at, suicide
