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Start free with EleplanPosterior cortical atrophy
ORPHA:54247Disease
Also called Benson syndrome · Biparietal Alzheimer disease · PCA
What it is
A rare neurologic disease characterized by impairment of higher visual processing skills and other posterior cortical functions without any evidence of ocular abnormalities, relatively intact memory and language in the early stages, and atrophy of posterior brain regions.
Key facts
- Age of onset
- Adult
- Inheritance
- Unknown
- Classified as
- Disease
Signs and symptoms
Very common80–99%
10These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
ICD-10 codes
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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