TY - CHAP M1 - Book, Section TI - Chapter 23. Infectious, Postinfectious, Toxin-Induced, and Drug-Induced Parkinsonism A1 - Stover, Natividad P. A1 - Lyons, Kelly E. A2 - Watts, Ray L. A2 - Standaert, David G. A2 - Obeso, Jose A. PY - 2012 T2 - Movement Disorders, 3e AB - Parkinsonism is defined by the presence of the cardinal symptoms of bradykinesia, rigidity, tremor, and postural instability. The most common cause of parkinsonism is idiopathic Parkinson's disease (PD) but a number of cases are due to secondary parkinsonism for which there are multiple causes. This chapter will review parkinsonism resulting from infectious causes1 and exposure to various toxins and drugs.2 SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/10/04 UR - neurology.mhmedical.com/content.aspx?aid=55797315 ER -