Violent mood swings...suicidal feelings...unpredictable behavior... Is your life a roller coaster of highs and lows? Do your moods vacillate between profound sadness and euphoria? If so, you may be suffering from bipolar disorder, a complex illness that involves the mood centers of the brain and affects as many as two million Americans. Since bipolar disorder is often misdiagnosed as major depression, an accurate diagnosis is crucial to understanding...