Completely updated including coverage of the Parkin gene, this second edition unveils advances in the genetics of Parkinson's Disease (PD). The author reviews the role of alpha synuclein in the genesis of PD and covers tau protein and related diseases, MPTP and drug induced PD, oxidative stress, mitochondrial dysfunction, and apoptosis. He explores pharmacological approaches to the treatment of PD such as the use of COMT inhibitors and dopamine agonist and advances in technology such as devices that provide additional treatment options including deep brain stimulation and transplantation. The book concludes with new chapters covering the differential diagnosis of PD and related disorders.