Posterior cortical atrophy

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Posterior cortical atrophy (PCA), also called Benson's syndrome, is the visual variant of Alzheimer’s disease[1]. It is a clinical syndrome in which complex visual processing is progressively disrupted owing to a neurodegenerative disorder. PCA was first described by Franck Benson in 1988.

Renowned fantasy fiction writer Terry Pratchett has been diagnosed with this disease.

[edit] References

  1. ^ Nestor PJ, Caine D, Fryer TD, Clarke J, Hodges JR: The topography of metabolic deficits in posterior cortical atrophy (the visual variant of Alzheimer’s disease) with FDG-PET. J Neurol Neurosurg Psychiatry 2003; 74:1521–1529

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