What are we calling NPD?
A set of behavioural traits? Compensatory Narcissistic Defences? Not having resolved the stage children usually resolve at six - a cause of classic NPD behaviour that is totally different from the previous bit? Which part is NPD, cause they can both cause similar behaviour, but for such totally different reasons you could argue they are absolutely nothing to do with each other...
There are a whole load of "NPD victim sites" around that describe the behaviour of people with NPD, but when you look into how NPD is "supposed" to develop, a lot of this doesn't actually even match up or make sense when put together. a whole bunch of different issues are getting thrown in with "NPD" - because some of them cause similar behaviour, but if the causes behind this behaviour are entirely different, its like trying to say hernia is appendictitis because both cause abdominal pain. This is a problem cause removing someon's appendix won't do much to cure a hernia.
there's a stage kids are supposed to resolve somewhere around 6, where they stop seeing themselves as the centre of the universe. Someone once asked on the BPD forum if this meant BPDs could "mature into Narcissists" but this is completely daft, because the problems are different psychological processes that get resolved at those stages of development - or not in the case of PDs - different issues, not linear as if people are literally retarded and haven't matured past 3 or 6 or whatever in any way at all. otherwise all BPDs would have NPD too. when they happen is still important to help know "where to look" to fix them... but im guesing that's about it.
Six year olds don't act the way they do because they have deep-seated psychological problems and lack of self esteem, its because they really don't recognise they are not the centre of the universe.. as for attention, and what people have been doing since they were toddlers, children need attention all the time, no child has an addiction - if an adult develops an addiction to attention to fill a psychological void of some sort, this is not the same thing as the above problem.
One of the ideas with problems in NPD is that a person never resolved that 6-year-old stage and still sees themself as being the centre of the universe. to them, other people exist as extensions of them self. you can imagine that could cause very similar behaviour to a need for attention, and to outrage at attacking someone's ego, e.g. with low/non-existent self-esteem. but the causes are completely different....
<split so it can be read lol>