Narcissism, often referred to as "narc," is a personality trait characterized by an excessive focus on oneself, a need for admiration, and a lack of empathy for others. People with narcissistic tendencies may display grandiosity, believing they are superior or unique. This behavior can lead to difficulties in relationships and social interactions. In psychology, narcissism exists on a spectrum, with some individuals exhibiting mild traits while others may have Narcissistic Personality Disorder (NPD). NPD is a more severe form, requiring clinical diagnosis and treatment. Understanding narcissism can help in recognizing its impact on personal and professional relationships.