title: Non-Parkinson akinetic-rigid syndromes.
abstract: We review developments in the study of akinetic-rigid syndromes other than Parkinson's disease within three main categories: recording of new etiologies, advancing knowledge on previously known causes, and studies of Parkinson's disease imitators and clinical and investigational means of accurately distinguishing them from Parkinson's disease.
authors.affiliation: Mount Sinai Medical Center, Cleveland, Ohio, USA.
authors.forename: D E
authors.initials: DE
authors.lastname: Riley
authors.forename: A E
authors.initials: AE
authors.lastname: Lang
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D009127:Muscle Rigidity / Q000175:diagnosis / Q000209:etiology*; D010300:Parkinson Disease / Q000175:diagnosis / Q000209:etiology; D010302:Parkinson Disease, Secondary / Q000175:diagnosis / Q000209:etiology*