<unk> , first defined in 1924 by Josef Gerstmann, is the loss in the ability to distinguish, name, or recognize the<unk> s—not only the patient's own<unk> s, but also the<unk> s of others, and drawings and other representations of<unk> s. It is one of a tetrad of symptoms in Gerstmann syndrome, although it is also possible for<unk>  to exist on its own without any other disorders. Usually, lesions to the left angular gyrus and posterior parietal areas can lead to<unk> .
Finger agnosia
Visuospatial dysgnosia
Hemimotor neglect
Apperceptive agnosia
Hemispatial neglect
Phonagnosia
Autotopagnosia
Dysmorphopsia