74 While it has been well documented that the extrapyramidal syndrome is associated with impairment in basic ADLs, 75 , 76 Rasovska and Rektorova also observed highly significant correlations between IADL and functional disability. 77 Axial non-dopaminergic symptoms (such as postural instability and gait difficulty) influence IADLs; this is more evident in PDD patients than in persons suffering from PD without dementia. 77 However, a recent study demonstrated that cognitive
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