This visual deficiency is called prosopagnosia, and people who suffer from it can have issues recognizing their friends, family, and even themselves.

Usually, it’s a result of damage or abnormality in neural systems that control perception and memory. It can happen after a stroke, head trauma, or in relation to a degenerative disease.
The vast majority can sometimes have difficulties remembering faces they’ve seen in the past, but prosopagnosia is more serious; people who suffer from it usually can’t recognize people they talk to every day.
Prosopagnosics will often rely on other visual and audio information, like hair, clothing, and voice when it comes to recognizing faces.
A person with prosopagnosia can experience troubles every day and often can’t imagine the faces of the people they are close to.

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