I suspect we're all going to be learning more in the coming months about
Narcissistic Rage.
You know, the kind of temper tantrum DT probably threw with Hope Hicks before she quit yesterday.
DT's temper is a direct result of his narcissism. It's a direct result of his feeling that his power is being threatened -- so he will be having these rages more and more as time goes on.
https://www.psychologytoday.com/blog/just-listen/201202/rage-coming-soon-narcissist-near-you
There is a saying that when youre a hammer the world looks like a nail. When youre a narcissist, the world looks like it should approve, adore, agree and obey you. Anything less than that feels like an assault and because of that a narcissist feels justified in raging back at it.
What is really at the core of narcissists is an instability in their ability to feel and sustain feeling bigger, larger, smarter and more successful than everyone else which they need to feel stable. And just as Hamlets mother said, the lady doth protest too much, the narcissist doth brag, scorn, talk down, primp and belittle too much in order to continually prove to the world and themselves that they are larger than life. This is not to increase their self-esteem as much as it is to continually spackle the holes in their core that lead to a feeling of instabilityand that, if not spackled, will lead to brittleness followed by fragmentation.
SNIP
Narcissistic rage occurs when that core instability is threatened and furthermore threatened to destabilize them even further. Not unlike a wounded animal being the most vicious (because they think the next wound would kill them), narcissistic rage occurs when narcissists believe the next insult/assault to their grandiose based stability would shatter them.
In essence the reason narcissists are so self-centered is that their grandiosity based center needs to be constantly reinforced to remain stable.