We are often told that self-importance is necessary to build a positive self-image and identity, but exaggerated feelings of self-importance can be toxic.

Exaggeration of anything is not good, but here I'm talking about a personality disorder which is classified as a mental disorder too.

Dated back to Greek mythology, we have that idea about how Narcissus fell in love with his reflection, and that's how we know about how Narcissism is evoked.

Many termed it self-love, but it is more complex; narcissistic personality disorder is a kind of disorder where an individual is constantly imbued in the feelings like excessive self-admiration.

It is not limited to the feelings of self-admiration; people tend to develop habits that are unacceptable in every way, like a diminished ability or unwillingness to sympathize with others.

Since it's a mental disorder, there are many reasons to see it as the cause.

It can be related to past experiences or trauma that tormented someone to the extent that they adopted some inappropriate behaviour.

This condition is serious, and everyone should read about it.