I mean, people with bipolar disorder act in a similar way to each other, same with schizophrenia and even anxiety and depression.
Suggesting that a narcissist is "possessed," is just an attempt to explain behavior that feels extreme or inhuman. But from a scientific perspective, narcissistic traits—and even more severe patterns like sociopathy—are well-explained by psychology and neuroscience.
Narcissistic Personality Disorder (NPD) is a recognized mental health condition rooted in personality development, often shaped by early childhood experiences, trauma, or attachment issues.
These individuals often develop patterns of grandiosity, lack of empathy, and manipulation as coping mechanisms, not because of any external supernatural force.
Modern neuroscience backs this up. Brain imaging studies have shown that people with narcissistic or sociopathic traits often have measurable differences in brain regions involved in empathy, emotional regulation, and moral reasoning—particularly the prefrontal cortex and amygdala.
These differences can explain the emotional coldness or manipulative tendencies sometimes seen in such individuals. Rather than resorting to mystical ideas like possession, it's more accurate to see narcissism as a complex, but understandable, mental and neurological condition.
I have had a diagnosed narcissist in my life. He felt evil. He did evil things. I have never met anyone quite like him. He systematically destroyed my self esteem and even my ability to think logically.
He wasn't possessed, but I would agree that his humanity felt very far removed from what someone like us can understand.