I recommend the YouTube channels: 'The Crappy Childhood Fairy' and 'Live Abuse Free'. Both deal with narcissism a lot.
From the top of my head- yes- abuse of sorts can lead to it I believe. So- the parent doesn't appreciate the child for who they really are. The child is in effect, an extension of them- they may be narcissistic themselves. So- they only receive praise and 'love' for behaving in a certain way that reflects well on them and they may receive harsh criticism otherwise. So, they can't be themselves and be accepted so, I guess they develop that persona or mask in order to please the parent. I guess that also would support why they tend to always be looking for praise.
I'm not an expert by any means and I may have just got that wrong! I'm pretty sure I grew up with a narcissist and I'm pretty sure their own child is now displaying traits.