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Parkinsonism and other extrapyramidal diseases 

Parkinsonism and other extrapyramidal diseases
Chapter:
Parkinsonism and other extrapyramidal diseases
Author(s):

K. Ray Chaudhuri

DOI:
10.1093/med/9780199204854.003.240702_update_002

Update: A link to video material relating to movement disorders has been added to this chapter.

Updated on 24 Sep 2015. The previous version of this content can be found here.
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date: 12 December 2017

For video material relating to movement disorders, please go to Movement Disorders Videos.

Parkinson’s disease affects about 0.2% of the population, including 2% of those over 80 years of age. The main pathological feature is degeneration of neuromelanin-containing neurons in the pars compacta of the substantia nigra, which leads directly and indirectly to excessive inhibition of the thalamus and consequent bradikinesia....

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