Progressive supranuclear palsy (Steele-Richardson-Olszewski syndrome): a short historical review.

J. C. Richardson presented a clinical report of 8 cases of progressive supranuclear palsy (PSP, progressive supranuclear palsy) in June 1963. This paper briefly reviews the clinical, neuropathologic, and genetic features that subsequently have evolved, emphasizing the difficulties of differential diagnosis. Since PSP appears to be a heterogeneous syndrome, its precise nosology remains uncertain.