Features of the dementia in progressive supranuclear palsy

Features of the dementia in progressive supranuclear palsy

What are the clinical features of the dementia associated with progressive supranuclear palsy (PSP)? 

PSP is a syndrome characterized by supranuclear gaze palsy, dystonic rigidity of axial musculature, dysarthria, and pseudobulbar palsy.

The dementia is not clearly present in all patients and is difficult to characterize because the associated visual scanning disorder interferes with testing.

Memory impairments tend to be mild relative to frontal executive functions.