It's more than likely you know someone who's obsessed with their own image.
A quick scroll through social media can reveal the narcissists in a constant stream of selfies; you might even be one.
Narcissists think they're better, smarter, and more important than the people around them – and they want to be treated as such, experts say.
A new TEDEd video breaks down the different types of narcissism, from the obvious to the not-so obvious, and explains how these traits almost always take a turn for the dark side.