Differential diagnosis

John C. Morgan, Shyamal H. Mehta, Kapil D. Sethi

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Scopus citations


Parkinsonism refers to a clinical syndrome characterized by a variable combination of rest tremor, bradykinesia or akinesia, cogwheel rigidity, and postural instability. In general, two of these four features must be present to make a diagnosis of parkinsonism. However, the situation is complicated by rare cases of pure akinesia in the absence of tremor and rigidity that have the classic pathology of Parkinson’s disease (PD) (1). Within the rubric of parkinsonism there are a myriad of disorders, some yet unclassified (Table 3.1).

Original languageEnglish (US)
Title of host publicationHandbook of Parkinson's Disease, Fifth Edition
PublisherCRC Press
Number of pages21
ISBN (Electronic)9781841849096
ISBN (Print)9781841849089
StatePublished - Jan 1 2013

ASJC Scopus subject areas

  • General Medicine


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