Is narcissism a disease, illness or mental flaw - and is it even treatable?

Can be all those: All of us need to have some healthy self-interest -- healthy narcissism -- to deal with life. But when this becomes greatly exaggerated, squeezing out the needs of others, we get into difficulty. There are narcissistic personality disorders which maybe 4-7% of our society has. These involve fixed patterns of relating with several criteria. Yes it is treatable - with great care and patience.

Narcissism: The hallmark of a narcissist is an immense ego, grandiosity, and self-importance, as well as being entitled, and a tendency to use and objectify others as well as thinking of people in all-good or all-bad terms instead of shades of gray. The core of a narcissist is profound insecurity. Treatable yes, but often with slow progress and great difficulty.