I've been watching many videos about narcissists over the past year and they've been very helpful to me on personal level. An important thing to remember is that narcissist will not change. There is no recovery from being a narcissist.

That was really good. He speaks plainly and covers a lot

Rejection, abandonment
Ridicule, criticism
Disrespect
Being Ignored
Exposure

Not sure I have them all

The narcissist responds to those things with rage, anger, lashing out
blames others for not validating their greatness, etc

First, when a narcissist loses the plot to the argument it's often when they divert their comments from defending their position to attacking you personally, aka an Ad Hominem attack.

Make sure you interrupt whatever it is they are doing and make them aware that this is not acceptable in order to have a rational discussion. Tell them to stick to the argument. They will about wet themselves over the fact that you have now asserted the primary roll (of adult) in the discussion, because they have lost and they know they have lost the argument.

Secondly, return to the original point at hand, do not let them divert away. Drive the nail through their heart that you cannot understand the logic, their logic. "What you are telling me doesn't add up," and ask them to explain in more detail.

Thirdly, turn the argument around on them on how they came to that conclusion. This is especially effective for Fox News viewers who are mindless drones. They're conclusion driven, not evidence driven. 95% of the time, when you ask them if they came to their conclusion on their own, they will divert, mumble, go Ad Hominem to the Nth degree, etc., because again, they didn't form their argument's conclusion on their own, it was given to them; they bought into it.

Give it a try.

p.s. it helps if you also have a 'reasoning' background and can identify common fallacies on the fly. Narcissists whole world view is very fragile. In other words, their world view is based upon shallow lies.

Isn't that pretty much everyone?

A narcissist's response to criticism is different from that of a person with a healthy personality.

We might be hurt, offended or even angered, but the narcissist lashes out in a violent rage.

They go on the attack and they use every weapon in their arsenal to destroy the person who makes them feel that way. They don't stop until the person who has wounded them is wounded even more. That is the difference.

Look at how Trump behaves when he is threatened and ask yourself if you have ever behaved so insanely and extremely when you have been challenged.

What a fun one that was.

Because everything you say even when you aren't referring to them or anything they have done, they will interpret as you blaming them or casting aspersions since they think everything revolves around them. They are extremely sensitive to "perceived" slights. Also if you say something just in a casual comment that they think disagrees with their viewpoint, they can consider it a threat or disrespectful to them.

They think they can criticize and ridicule and disrespect you and it's okay and justified. But even a calmly spoken logical comment or statement of fact you make that involves something problematic they did or failed to do, can cause them to lash out calling you names in a rage. As the old saying goes, they can dish it out but they can't take it.

It's as if they are profoundly allergic.

We all need to protect ourselves from the constant exposure to someone that is so toxic and ill.

people who have appropriate responses that may include anger. A person might have a "button", a "trigger". They are constantly disrespected at home by a spouse or at work by a coworker, or a MIL, etc. They reach a point where they won't take it anymore and they lash out. From then on, they have a short fuse when they are disrespected by the offender and they react quickly and angrily because their button is pushed.

This is not only normal, but human and an expected psychological response to a repeated stress. His explanation would make this person a narcissist. I wish he would have made that clearer.

Obviously, I'm not describing a narcissist. I think his explanation is incomplete and could easily include all types of people who are reacting to others.