How Parkinson's disease harms the brain and how it's treated

Parkinson's researchers in Cleveland play important role in search for a cure
 
 














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The chemical ‘short circuit’

In Parkinson’s disease, dopamine-producing nerve cells begin to die off, leaving too little of the chemical. That causes the brain’s motion control center to “short circuit” and overstimulate its target neurons. This causes the muscle tremors symptomatic of Parkinson’s.