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Parkinson's Disease

What Is Parkinson's Disease? The Science Behind the Tremors

There are a few changes in the brain that may lead to symptoms of Parkinson’s disease.

Lauren Smith, MAMandy Armitage, MD
Written by Lauren Smith, MA | Reviewed by Mandy Armitage, MD
Updated on July 3, 2025
Featuring Jason Krellman, PhD, ABPP-CNReviewed by Mandy Armitage, MD | July 3, 2025

Parkinson’s disease is a progressive condition that can affect movement, thinking, and emotions. It’s associated with low levels of dopamine, a chemical in the brain.

Learn the role of dopamine in the development of Parkinson’s disease, as well as the risk factors, according to Jason Krellman, PhD, Neuropsychologist at Columbia University Irving Medical Center.

References

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Lauren Smith, MA
Written by:
Lauren Smith, MA
Lauren Smith, MA, has worked in health journalism since 2017. Before joining GoodRx, she was the senior health editor and writer for HealthiNation.
Mandy Armitage, MD
Reviewed by:
Mandy Armitage, MD
Mandy Armitage, MD, has combined clinical medicine with her passion for education and content development for many years. She served as medical director for the health technology companies HealthLoop (now Get Well) and Doximity.

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