↑Aminoff MJ, Greenberg DA, Simon RP (2005). "Chapter 7: Movement disorders". Clinical Neurology (6th ed.). Lange: McGraw-Hill Medical. pp. 241–45. ISBN978-0-07-142360-1.
↑Ogawa T, Fujii S, Kuya K, Kitao SI, Shinohara Y, Ishibashi M, Tanabe Y (September 2018). "Role of neuroimaging on differentiation of Parkinson's disease and its related diseases". Yonago Acta Med (Review). 61 (3): 145–55. doi:10.33160/yam.2018.09.001. PMC6158357. PMID30275744. Parkinsonian syndromes are a group of movement disorders characterized by classical motor symptoms such as tremors, bradykinesia, and rigidity. They are most frequently due to primary neurodegenerative disease, resulting in the loss of dopaminergic nerve terminals along the nigrostriatal pathway, similar to idiopathic PD, MSA, PSP, CBD, and DLB.
↑Christine CW, Aminoff MJ (September 2004). "Clinical differentiation of parkinsonian syndromes: prognostic and therapeutic relevance". The American Journal of Medicine. 117 (6): 412–9. doi:10.1016/j.amjmed.2004.03.032. PMID15380498.