A person with injury to the occipital cortex may develop a progressive dementia.


Clinical findings:

(1) visual impairment (difficulty reading and drawing not explained by poor visual acuity)

(2) slowly progressive dementia


Variable findings:

(1) optic ataxia (difficulty with visually guided hand movements)

(2) ocular apraxia

(3) simultanagnosia

(4) right-left confusion

(5) agraphia

(6) myoclonus

(7) alexia

(8) anomia

(9) aphasia


Features distinguishing this syndrome for Alzheimer's disease:

(1) relative preservation of memory skills

(2) brain pathology limited to the occipital lobe (relative sparing of other parts of the brain)

(3) good insight into visual disturbance

(4) normal fluency


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