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Hollywood
-throb Brad Pitt suffers from facial blindness. This is a neurological
that makes it difficult to recognize people's
. In serious
, sufferers can forget the face of a family member or even their
face. The little-known
is called prosopagnosia. It affects about 1 in 40 people. It often leads to
as people feel embarrassed in social
when they forget who people are. Sufferers can avoid situations in which they will meet
. They may become withdrawn. In
cases, they will be reluctant to leave their home.