Depending upon the level of narcissistic injury, the narcissist's defense mechanism may lead to assault or even murder. McCarthy (1972) connects narcissism with murder when considering homicidal adolescents.
People high in narcissism are especially likely to act aggressively when they are provoked, insulted, humiliated, shamed, criticized, or threatened by others. But they need not be provoked to attack.
Some of the most well known serial killers have been diagnosed with narcissism; Ted Bundy and Jeffery Dahmer are both known to have NPD.
In psychology, there is a concept of a “dark triad” of malevolent personality traits: psychopathy, narcissism and Machiavellianism. These traits are studied together because they almost always overlap and combine. If a person has psychopathic traits, then they tend to have narcissistic and Machiavellian traits too.
The most effective weapon to fend off narcissists is self-love. When you love yourself, it is more difficult for the narcissist to manipulate you and get under your skin. It will hurt them to know that you do not need them, that you are better off without them, and that you love yourself exactly as you are.
Some narcissists - though by no means the majority - actually ENJOY abusing, taunting, tormenting, and freakishly controlling others ("gaslighting"). But most of them do these things absentmindedly, automatically, and, often, even without good reason.
Differential Diagnosis
On the other extreme, persons with vulnerable narcissism may present with salient features of dysthymia, depression, and anhedonia. However, the grandiosity and need for admiration would be prominent despite the affective symptoms, which would differentiate it from a major depressive disorder.
Narcissists can sometimes be helpful and caring. However, more often than not, they only pretend to have these qualities. Moreover, even when they act giving and helping, they are not motivated by empathy because they severely lack it, and as a result, their help is often not very productive.
Narcissistic rage can be triggered by various situations, such as criticism, perceived rejection, or being ignored. The reaction is often extreme and disproportionate to the event or comment, as the narcissist's fragile ego struggles to cope with the perceived attack on their self-image.
Although narcissists act superior, entitled and boastful, underneath their larger-than-life facade lies their greatest fear: That they are ordinary. For narcissists, attention is like oxygen. Narcissists believe only special people get attention.
Do narcissists feel guilty and if so, do they ever repent? Answer: The narcissist has no criminal intent ("mens rea"), though he may commit criminal acts ("acti rei"). He does not victimise, plunder, terrorise and abuse others in a cold, calculating manner.
Malignant narcissists are often regarded as having the most extreme form of NPD, and while they will have the regular qualities of someone with narcissistic personality disorder, their self-absorption and self-obsession is accompanied by some darker behaviors as well.
A monumental weakness in the narcissist is the failure to look internally and flesh out what needs to be worked on. Then, of course, the next step is to spend time improving. The narcissist sabotages any possibility of looking deep within.
For the person on the receiving end, someone experiencing a narcissistic collapse may look out of control, extremely angry, and vindictive. In some cases, it may look like someone withdrawing altogether and giving them the silent treatment.
Sometimes, the narcissist doesn't mean to hurt you. Being sensitive to everything is just how their brains work. And if they are — by their own logic — being attacked, they will bite back even harder. However, by their nature, they may also want to hurt you too, because it makes them feel superior.
Narcissistic parents are often emotionally abusive to their children, holding them to impossible and constantly changing expectations. Those with narcissistic personality disorder are highly sensitive and defensive. They tend to lack self-awareness and empathy for other people, including their own children.
At the end of a relationship, narcissists may become combative, passive-aggressive, hostile, and even more controlling. People with NPD often fail to understand other people's needs and values. They are hyper focused on their egos, but do not account for how their actions affect others.
People with narcissistic personality disorder tend not to perceive that they themselves may have a mental health problem, and thus may be less likely to seek evaluation or treatment.
Narcissistic personality disorder involves a pattern of self-centered, arrogant thinking and behavior, a lack of empathy and consideration for other people, and an excessive need for admiration. Others often describe people with NPD as cocky, manipulative, selfish, patronizing, and demanding.
“To what extent do you agree with this statement: 'I am a narcissist.'” Scientists believe that this question could be all researchers need to make a quick and easy diagnosis of narcissism.
Narcissists can feel emotional pain, but not usually in the same way as others. The emotional pain they may feel is usually related to underlying selfish needs. Underneath the displays of superiority and sense of entitlement, they often feel empty, powerless, and shameful, which they perceive as weakness.
Narcissists can be grandiose when it comes to self-serving, unnecessary spending (i.e., buying a designer watch they can't afford), but skimp on the essentials (i.e., food, health expenses, basic household items).
MD. While being the target of narcissistic abuse is stressful and hurtful, many narcissists are unaware of how their actions impact others. If they are aware that others feel negatively about them or about their choices, they often lack the ability to take responsibility for their actions or see them as wrong.