PMC:6723065 / 33593-34139 JSONTXT

{"project":"2_test","denotations":[{"id":"31434341-28592453-7278321","span":{"begin":142,"end":145},"obj":"28592453"},{"id":"31434341-21661055-7278322","span":{"begin":410,"end":413},"obj":"21661055"},{"id":"31434341-12473757-7278323","span":{"begin":541,"end":544},"obj":"12473757"}],"text":"Cognitive deficits, by definition, should not appear within a year from MS onset (1-year rule), otherwise DLB diagnosis should be considered [115]. Over years, about 26% of PD patients will present mild cognitive impairment (MCI) features. PD-MCI is mainly associated with “subcortical” deficits (i.e., executive and attentional), but also visuospatial, praxis, language, and memory impairment can be present [116]. Dementia also appears in PD in up to 80% of cases, typically in advanced stages, and is associated with increased mortality [117]."}