In our paper we discuss the existence of narcissism as instinct; a Mendelian trait that can be inherited from either parent. This instinct is an essential component of five different personalities in our model and these personalities can be classified into two groups: Narcissistic and Obsessive. How these personalities manifest in individuals and how the individual interacts with the healthcare system is described. Narcissistic instincts are kept in check by the superego. When the superego starts to fail, the Narcissist goes through three stages ending with the development of narcissistic personality disorder (NPD); where the person is not capable to hear, speak, and see in sensible ways. Reversal of NPD symptomology is unlikely once NPD is fully developed. We recommend prevention as a strategy to reduce the incidence of NPD.