Parkinson disease (PD) is a brain disorder that causes tremors and problems moving.
|Part of the Brain Affected by PD—Yellow Section|
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Dopamine is a chemical in the brain. It helps people move and control their emotions. PD is caused by a loss of brain cells that make dopamine. It is not known why this happens.
A small number of people with PD have an early-onset form. This type is caused by a faulty gene. It is passed down from parents.
PD is more common in older adults. Other things that may raise the risk are:
- Family members with PD
- Exposure to toxins, such as well water and pesticides
Symptoms start slowly and get worse over time. Common ones may be:
- Tremors that are worse at rest
- Moving slowly
- Muscle stiffness
- Problems doing tasks with the hands
- Problems moving, such as taking smaller steps and shuffling
- Problems doing activities of daily living, such as dressing
- Sleep problems
- Mood swings
- Problems thinking
- Perceiving things that are not there
- Believing things that are not based in reality
- Problems with urine and bowel control
The doctor will ask about your symptoms and health history. A physical exam will be done. This may be enough to make the diagnosis. There are no tests for PD.
Images may be taken to rule out other causes and confirm the diagnosis. These may be:
There is no cure. Treatment is aimed at managing symptoms.
Medicines that may be used to ease symptoms are:
- Levodopa-carbidopa to treat tremors and problems moving
- Dopamine agonists
- Monoamine oxidase type B inhibitors
- COMT inhibitors
Medicine may also be given to ease symptoms of depression.
Surgical choices are:
- Deep brain stimulation (DBS)—implants a device to stimulate certain parts of the brain to ease problems with movement
- Thalamotomy—destroys certain parts of the brain to improve severe tremors
Therapy can improve muscle tone, strength, balance, and movement.
Cognitive Behavioral Therapy
Cognitive behavioral therapy may ease symptoms and improve quality of life. It has a person examine their feelings and thought patterns, learn to interpret them, and apply coping methods to situations.
National Parkinson Foundation http://www.parkinson.org
Parkinson's Disease Foundation http://www.pdf.org
Health Canada https://www.canada.ca
Parkinson Society Canada http://www.parkinson.ca
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9/3/2014 DynaMed Plus Systematic Literature Surveillance. Available at: https://www.dynamed.com/topics/dmp~AN~T115172/Parkinson-disease : Wippold FJ, Brown DC, Broderick DF, et al. American College of Radiology (ACR) Appropriateness Criteria for dementia and movement disorders. Available at: http://www.acr.org/~/media/ACR/Documents/AppCriteria/Diagnostic/DementiaAndMovementDisorders.pdf. Updated 2014. Accessed August 28, 2015.
11/10/2015 DynaMed Plus Systematic Literature Surveillance https://www.dynamed.com/topics/dmp~AN~T115172/Parkinson-disease : Shanahan J, Morries ME, Bhriain ON, Saunders J, Clifford AM. Dance for people with Parkinson disease: what is the evidence telling us? Arch Phys Med Rehabil. 2015;96(1):141-153.
2/24/2016 DynaMed Plus Systematic Literature Surveillance https://www.dynamed.com/topics/dmp~AN~T115172/Parkinson-disease : Leung IH, Walton CC, Hallock H, et al. Cognitive training in Parkinson disease: a systematic review and meta-analysis. Neurology. 2015;85(21):1843-1851.
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- Reviewer: EBSCO Medical Review Board Rimas Lukas, MD
- Review Date: 09/2019
- Update Date: 10/21/2019