What are some symptoms and what causes bipolar disorder?

No need for sleep: Typically, no need for sleep or very little sleep over several days or up to a week and not feeling tired. Also, feeling like you have superpowers, you can fly, or save the world by yourself, grandiose delusions. Finally, increased risk taking behaviors, like excessive gambling, sexual promiscuity, shopping sprees, etc. Depressive episodes are similat to unipolar depression.