A rare late-onset neurodegenerative disease characterized by supranuclear gaze palsy, postural instability, progressive rigidity, and mild dementia. The disease is MONDO_0019037 (progressive supranuclear palsy). Also known as: PSP syndrome, Steele-Richardson-Olszewski disease, Steele-Richardson-Olszewski syndrome, progressive supranuclear ophthalmoplegia.