There are some strange things I’ve noticed narcissists do that aren’t usually mentioned as symptoms of their disorder but seem to be common enough perhaps they should be included as additional criteria for NPD.
If you know someone who does only one or two of these things, it doesn’t necessarily mean they’re a narc, but if they do several of them regularly and also seem to fit the more well-known criteria for NPD, these things could be red flags to watch out for.
1. They don’t blink when they look at you.
Some narcs have a penetrating, predatory gaze. If a person of the opposite sex looks at you this way, you may take it as sexual interest (and it could be), but watch carefully: if they do not blink this could mean they are sizing you up as prey. Whether they blink or not, if their stare makes you squirm, get away. Listen to your instincts.
2. They interrupt you or talk over you constantly.
If someone only seems to care about what they are going to say next, and don’t even seem to have heard what you said, suspect a narcissist.