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Parkinson's Disease

Rate of progression of Parkinson's disease hard to predict

DEAR MAYO CLINIC: My father is 64 and was diagnosed with Parkinson's last year. So far his symptoms are very mild, but I'm wondering what the typical progression of the disease is like. I have read that deep brain stimulation is sometimes recommended. When is this type of treatment usually considered? Is it safe?

ANSWER: The symptoms of Parkinson's disease, or PD, tend to begin very gradually and then become progressively more severe. The rate of progression is hard to predict and is different from one person to another. Treatment for PD includes a variety of options, such as exercise, medication and surgery. Deep brain stimulation is one surgical possibility for treating PD, but...