Posterior cortical atrophy
Medical condition / From Wikipedia, the free encyclopedia
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Posterior cortical atrophy (PCA), also called Benson's syndrome, is a rare form of dementia which is considered a visual variant or an atypical variant of Alzheimer's disease (AD).[1][2][3] The disease causes atrophy of the posterior part of the cerebral cortex, resulting in the progressive disruption of complex visual processing.[4] PCA was first described by D. Frank Benson in 1988.[5][6]
Posterior cortical atrophy | |
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Other names | Biparietal Alzheimer disease |
Lobes of the human brain | |
Specialty | Neurology |
PCA usually affects people at an earlier age than typical cases of Alzheimer's disease, with initial symptoms often experienced in people in their mid-fifties or early sixties.[4] This was the case with writer Terry Pratchett (1948–2015), who went public in 2007 about being diagnosed with PCA.[7] In rare cases, PCA can be caused by dementia with Lewy bodies and Creutzfeldt–Jakob disease.[6][4]