Abstract
Background: Prosopagnosia, the selective inability to recognize known faces, has been described in Alzheimer's disease and fronto-temporal dementia but is not expected to occur in Parkinson's disease (PD). Methods and results: We report three PD patients who developed recurrent, paroxysmal and short-lasting episodes of prosopagnosia, before progressing to PD dementia (PDD). Hallucinations and other higher-order visual deficits - such as optic ataxia and micro/macropsia - were also seen. Conclusion: Progressive signs of temporal and parietal dysfunction have been suggested to herald dementia in PD. The observation of prosopagnosia and other higher-order visuoperceptive defects in the transition to dementia, reinforce the importance of posterior-cortical deficit in PD. © 2012 Elsevier Ltd.
Original language | English |
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Pages (from-to) | 375-377 |
Journal | Parkinsonism and Related Disorders |
Volume | 19 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1 Mar 2013 |
Keywords
- Dementia in Parkinson
- Higher-order visual deficit
- Optic ataxia
- Parkinson's disease
- Prosopagnosia