By Norman Hoffman • Guest Columnist
Most psychiatric conditions require the clinician to interact directly with the individual to determine a diagnosis. For example, most of us have experienced some level of depression, but few of us have reached the threshold for a diagnosis of major depressive episode, which requires additional criteria, such as loss of appetite, sleep disturbance, slowed concentration, feelings of guilt, and/or thoughts of death.
However, there are a few conditions that can be determined from observable behavior. One of these is narcissistic personality disorder. Of the nine criteria, five are required to indicate a diagnosis, and most can be determined from observing behaviors. Here are the nine criteria: