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Home arrow Health arrow Cognitive impairment and dementia in Parkinson disease


The point prevalence of PD-D is close to 30% and the incidence rate is increased four to six times compared with people without PD. In addition, MCI occurs in 20-25% of PD patients without dementia. The cumulative prevalence is very high—at least 75% of PD patients who survive for more than 10 years will develop dementia. The time from onset of PD to dementia varies considerably. The most established risk factors are old age, severity of motor symptoms, in particular PIGD, and the presence of MCI, VH, and RBD.


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