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Up to: Atypical progressive supranuclear palsy syndrome
Progressive supranuclear palsy-progressive non-fluent aphasia syndrome
PSP-progressive non fluent aphasia (PSP-PNFA) is an atypical variant of progressive supranuclear palsy (PSP), a rare late-onset neurodegenerative disease. Unlike classic PSP (Richardson syndrome) patients present with an isolated speech production problem years before developing other motor features of PSP.
This condition has no sub-types.