Few yrs, rare
Benson's syndrome (also posterior-back brain-cortical atrophy) is a rare neurodegenerative disorder start in vision
cnter with inability to recognize familiar objects or people.
It is a syndrome, because it can be part of another disease, such as alzheimers or jacob-creutzfeld). Mild to severe, 1 to >10 yrs, stable for yrs or progressive disability. First 2 yrs at specialized center is crucial.