Some people are great at remembering faces. While, for some people, remembering a face can be difficult. Even for others, remembering a face may be impossible. Such people have a condition(call) "face blindness". Its actual name is Developmental Prosopagnosia, or DPshort.
Experts say DP can differ(great) from patient to patient. In less severe cases, people are unable to describe the face of someone they have just met. In severe cases, people cannot even recognize(they) own children in a group photo.
Those,have DP, show no clear signs. Take Dacia for example. If you met her, you probably wouldn't know that she suffered brain damage as a child. There would be no sign of it until you meet hersecond time. She wouldn't remember you at all. Dacia has mostly recovered from her(injure). But now, she suffers from face blindness.
Once face blindness(think) to be very rare. But recent(study) have shown that it might be more common than experts thought. The study on face blindness will not directly lead to any treatments. However, it could lead to a much(deep) understanding of how we all remember the world around us.