Understanding Movement Disorders

Movement Disorders and You

Your body’s ability to move involves a complex interaction between your brain, spinal cord, nerves and muscles. When these interactions are affected by nerve disease, autoimmune diseases, infections, injuries, hereditary factors or certain medicines, the result may be a neurological condition called a movement disorder.

Common movement disorders include Parkinson's disease and essential tremor, and if you have either condition, you may have difficulty with the speed, fluency, quality and ease of your movements.

An estimated 10 million people in the U.S. live with essential tremor,1 while nearly 1 million live with Parkinson’s disease.2

Living your life and regaining independence

Parkinson’s disease and essential tremor are serious and progressive—with life-altering symptoms. However, effective therapy options like deep brain stimulation (DBS) with the St. Jude Medical Infinity™ DBS system can help you manage these conditions so you can live the life you want and regain your independence. Learn about the risks of DBS therapy.

Learn more about these movement disorders and therapy options that can help:

Parkinson’s disease

Parkinson’s disease is a slow, progressive brain condition that takes away the control a person has over his or her movements. Symptoms include tremors, slowed muscle movement, muscle stiffening, and changes in speech, walking or balance. While there currently is no cure and the cause is unknown, people with Parkinson’s can find ways to manage their symptoms and live life to the fullest.

Learn more about Parkinson’s disease.

Essential tremor

Essential tremor, also referred to as tremor, is a neurological condition that causes shaking or rhythmic trembling typically in the hand, but also the head, arm, voice, tongue, legs and torso. While sometimes confused with Parkinson’s disease, it is a distinct condition, and is about ten times more common than Parkinson’s.1

Learn more about essential tremor.


1. International ​Essential Tremor Foundation. (2013). Facts about essential tremor. Retrieved from http://www.essentialtremor.org/wp-content/uploads/2013/07/FactSheet012013.pdf
2. Parkinson's Disease Foundation. Statistics on Parkinson's. Retrieved from http://www.pdf.org/en/parkinson_statistics