A "small stroke", also known as a "silent stroke" can cause Parkinson's disease - this explains why some people who are outwardly health may develop the disease. Researchers from the Faculty of Life Sciences at the University of Manchester, England, explained in the journal Brain Behavior and Immunity that severe stroke has been associated with Parkinson's. However, a significant number of people develop the tremors and other symptoms linked to the disease for no clear reason, "symptoms come out of the blue"...
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