Prosopagnosia (Face Blindness)
Prosopagnosia, also called face blindness, is a disorder in which people are unable to recognize faces. Those with this condition can see individual parts of a face (the nose, eyes, mouth, and so on) but can’t process the features together as a whole. Therefore, they can’t commit any faces to memory, not even their own face. This creates many social difficulties for sufferers. Everyone looks the same to them, and they may have trouble connecting emotionally to others. In some sufferers, the disorder is caused by brain injury; in others, it is inherited.