Noun
Parkinson-plus syndrome (plural Parkinson-plus syndromes)
(pathology) Any of a group of neurodegenerative disorders characterized by the classical features of Parkinson's disease (including tremor, rigidity, akinesia/bradykinesia, and postural instability) with additional features that distinguish them from idiopathic Parkinson's disease.
Hyponyms: corticobasal degeneration, multiple system atrophy, progressive supranuclear palsy