You don't look like anyone I know

Heather Sellers has prosopagnosia, a rare neurological condition that prevents her from reliably recognizing people's faces. Growing up she took what cues she could from speech, hair, and gait but she often could not recognize those she knew and feared she was crazy. It was only when she was an adult and took the man she would marry home to meet her parents that she began to recognize the truth of her condition.