You are interested in learning more about Parkinson's disease, a neurological disorder that mainly affects motor function. Which is the best source to begin your investigation?

The patient's medical history is the best source to start the investigation for the Parkinson's disease.

Explanation:

There is no any exact diagnosis technique for the Parkinson's disease, which is a neurological disorder disease. Doctor diagnose this disorder by thoroughly examining the patients medial history, sign, symptoms and physical reference. No blood test or any scans are available that will show the presence of this neurological disorder. Although MRI, CT, ultrasound of the brain can be the leading test for Parkinson's disease presence to be assured.