Parkinsonism

‘Parkinsonism’ is a collection of four clinical features that are typically, although not exclusively, observed in PD.² The features may also be present in patients with other neurological disorders, including progressive supranuclear palsy, multiple system atrophy, corticobasal degeneration, and vascular parkinsonism.³ Together with PD, these disorders are collectively called the ‘parkinsonian syndromes’ and reflect the underlying dysfunction of the basal ganglia region of the brain, or other systemic degeneration.³

References:
1.Chaudhuri KR, Ondo W. Handbook of Movement Disorders. London: Current Medicine Group, 2009.

2.Massano J, Bhatia KP. Clinical approach to Parkinson’s disease: features, diagnosis, and principles of management. Cold Spring Harb Perspect Med 2012; 2 (6): a008870.

3.Williams DR, Litvan I. Parkinsonian syndromes. Continuum (Minneap Minn) 2013; 19 (5): 1189–1212.