In Bipolar Disorder part 5 Dr. Paul continues his discussion of what he believes is the most underdiagnosed, undertreated and mistreated diagnosis in the field of mental health. He explains why it is so important to take a very detailed history in order to diagnose correctly, which is the only way to come up with the best treatment strategy. He again outlines the different types of bipolar disorder, and why the most subtle cases are the ones that are most often diagnosed incorrectly.