31 Weiner, William J 2008 Archives of neurology 65 6 705-8 2008 Jun Arch. Neurol. http://www.ncbi.nlm.nih.gov/pubmed/18541790?dopt=Abstract The term Parkinson disease defines a specific clinical condition characterized by a typical history and characteristic signs. This review examines the historical evolution of the concept of Parkinson disease and how the misunderstanding of Parkinson disease may be hindering clinical research trials. It is proposed that this syndrome be called Parkinson diseases or parkinsonism type 1 through infinity.