progressive supranuclear palsy

progressive supranuclear palsy

noun

Definition of PROGRESSIVE SUPRANUCLEAR PALSY

: an uncommon neurological disorder that is of unknown etiology, that typically occurs from late middle age onward, and that is marked by loss of voluntary vertical eye movement, muscular rigidity and dystonia of the neck and trunk, pseudobulbar paralysis, bradykinesia, and dementia—called also supranuclear palsy