So what causes you, or trigger, to have a bipolar episode? A trigger is an environmental, biological, or situational factor that causes symptoms of the disorder. Lack of sleep, very stressful situations, and trauma are just a few. By figuring out your triggers you get a little bit more control over the illness. It will help you manage your disorder.
Some of my triggers are lack of sleep appetite on if I ate or what I ate, and stressful situations.