10 Symptoms to Identify Bipolar Disorder

9. Abnormal Sleep Patterns

People with bipolar often experience disrupted sleep patterns during both manic and depressive phases. During the former, the individual may feel they require only two or three hours of sleep each night, still maintaining their high energy and mood without experiencing fatigue. With depression, on the other hand, the person is prone to sleeping too much. Disrupted sleep can exacerbate other symptoms, as well as having a generally negative effect on health.