I've often seen it as the inability to reconcile your public image with your private self.An instance would be an actress who is world renowned for being a badass on TV and very popular.
But then is extremely private in real life and absolutely refuses to even participate in selfies with fans.🤷🏿♂️
So the public image is one thing and is often separate with the private self. And the person concerned often has a dissonance between the two and never mixes them up.