Bipolar 2 is another type of disorder that has a multitude of depressive episodes. It also needs to have at least one episode of hypomania behavior. Bipolar 2 requires a two-week long depressive episode. The hypomania episode requires a minimum of four days in length. Bipolar 2 is very difficult to diagnose because hypomania symptoms are very difficult to identify. Many people are misdiagnosed. They may be diagnosed as having chronic depression. Treatment is also very difficult to predict, you will need to stay in constant contact with your psychiatrist, and create a moods and behavior diary. Your psychiatrist may have to prescribe different medications, or medication cocktails to find the right balance for you.