What is bipolar disorder? Bipolar disorder is a psychological health condition manifest by extreme shifts in mood. Key symptoms include: a tremendously elevated mood, or episodes of mania or a low mood, or episodes of depression Previous terms for bipolar disorder consist of bipolar disease and manic depression. This disorder isn’t an uncommon condition. The National Institute of Mental Health explained that 2.8 percent of United States adults — nearly 5 million people — have…