Prosopagnosia, is an impairment in the ability to perceive and identify faces. People who suffer from prosopagnosia reports that they experience difficulties recognizing familiar faces and even their close relatives and acquaintance(parents, spouse, children and etc) or their own face in the mirror.
In many cases this impairment is not related to any other difficulties in perceiving other objects, such as places, buildings.
People who suffer from congenital prosopagnosia do not suffer from any neurological or health problem, but for some reason experience this difficulty, in perceiving faces, from birth.
On the other hand, acquired prosopagnosia occurs as a result of brain damage in areas that are involved in face processing and perception. Individuals who suffer from this condition did not experience difficulties in face perception prior to the injury and hence it has a late onset.
Activation (lower) and connectivity (upper) patterns of brain areas that involve in face perception in individuals with congenital prosopagnosia (CP) as compared to matched controls.