Having a grandiose sense of self-importance is a defining characteristic of NPD. People with NPD have a sense of superiority over others.
It is not always obvious that someone with NPD feels superior to others. Some people with NPD appear confident and self-important, whereas others may appear to be insecure and self-deprecating.
In both cases, however, the person firmly believes they are better than others.
They may insist on having the best of everything or reject things that they feel are beneath them, such as a mundane job. Those with NPD may exaggerate or lie about their achievements.
A constant need for attention and admiration
People with NPD have a deep need for attention and admiration from people around them. This is because they typically rely on other people as a source of self-esteem and do not have a defined sense of self.
Someone with NPD may exhibit attention seeking behavior to get the admiration they feel they need or deserve.
The tendency to monopolize conversations
According to the DSM-5, people with NPD display little genuine interest in the experiences of others. As such, someone with NPD may dominate conversations or lose interest in conversations that do not revolve around them.
They may also use relationships for personal gain.
A lack of regard for other people’s feelings and needs
As those with NPD often lack empathy for others, they will consistently disregard the needs of other people. They often care very deeply what others think of them, but otherwise may find it difficult to understand or simply do not care about their feelings.
Individuals with NPD can also be antagonistic towards people due to this lack of empathy, or if someone challenges their feeling of superiority.