Ask the Expert: Symptom or Side Effect?

1. What’s the main difference between tremor and dyskinesia?

Tremor seen in Parkinson’s disease is one of the hallmark features of the condition. It’s one of the motor symptoms of Parkinson’s that shows improvement with medication.On the other hand, dyskinesia tends to show up later in the course of a disease as a long-term side effect of medications used to treat Parkinson’s. Sometimes it can be a bit hard to tell whether the abnormal movements are tremor or dyskinesia.

Commonly, with Parkinson’s, the individual has worsened tremor while the hands are at rest or supported by the body against gravity and then improves when the arms are in motion.

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