Possible Link Between Parkinson's Disease and Stroke

Annual incidence of ischemic stroke higher among those with Parkinson’s disease.

New findings presented at the American Stroke Association’s International Stroke Conference 2017 suggest an association between Parkinson’s disease and stroke.

For the study, investigators examined medical claims information from 2008 to 2014 in a sample of Medicare beneficiaries who were 66 years and older.

In separate analyses, they also examined the relationship between stroke and Alzheimer’s disease for comparison.

The results of the analysis showed that the annual incidence of ischemic stroke was 1.75% among individuals with Parkinson’s compared with 0.96% among those without the disease.

Contrastingly, the annual incidence of ischemic stroke was 1.96% among individuals diagnosed with Alzheimer’s disease compared with 0.96% in those without Alzheimer’s.

The annual incidence of Parkinson’s disease after ischemic stroke was 0.97% versus 0.39% in those without ischemic stroke. For Alzheimer’s, the annual incidence of the disease was 3.66% in elderly adults diagnosed with stroke compared with 1.17% in those without ischemic stroke.

The authors noted that the relationships betweenParkinson’s diseaseand stroke among Medicare beneficiaries was similar to those seen between stroke and Alzheimer’s disease.

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