The other day I was asked a question by a friend of mine about the age of onset for NPD. I was pretty sure I knew the answer and trotted out the information about the characteristics as defined in the DSM
Having one or two traits of narcissism is not unusual, but when narcissistic traits are so predominant that they impair a person’s social functioning, it may qualify them for a diagnosis of Narcissistic Personality Disorder (NPD).
Lack of empathy is a quintessential hallmark of people with Narcissistic Personality Disorder. They simply do not care about thoughts and feelings of others, especially if they conflict with their own.