Prosopagnosia
Prosopagnosia, also called face blindness, is a cognitive disorder of face perception in which the ability to recognize familiar faces, including one’s own face (self-recognition), is impaired, while other aspects of visual processing (e.g., object discrimination) and intellectual functioning (e.g., decision-making) remain intact.
Basically, you just can’t recognize faces, including your own, or have a lot of difficulty doing so, despite your ability to recognize other things and make decisions being quite normal or even good.
From this really interesting TEDRadio Hour podcast…
Digital Citizen 