Parkinson disease (PD) is a progressive movement disorder. PD is characterized by:
|Part of the Brain Affected by PD—Yellow Section|
|Copyright © Nucleus Medical Media, Inc.|
PD is caused by a loss of certain nerve cells in the brain. The loss of these cells causes a decrease in the amount of a brain chemical called dopamine. Low dopamine levels cause PD symptoms.
The brain cells may be lost because of genetic defects, the environment, or some combination of the two. A small amount of people with PD have an early-onset form. This type is caused by an inherited gene defect.
PD is more common in men and in people aged 50 years and older. Other factors that increase your chance of PD include:
PD is a progressive disease. Symptoms begin mildly and worsen over time.
PD may cause:
You will be asked about your symptoms and medical history. A physical exam will be done. There are no tests to definitively diagnose PD. The doctor will ask many questions. This will help to rule out other causes of your symptoms.
Tests to rule out other conditions may include:
Imaging tests evaluate internal bodily structures. This can be done with:
Currently, there are no treatments to cure PD. There are also no proven treatments to slow or stop its progression. Some medications may help to improve symptoms. Over time, the side effects of the medication may become troublesome. The medications may also lose their effectiveness.
Medications that may be used to treat PD include:
Depression or hallucinations may also occur with PD and its treatment. Medications may be prescribed to attempt to treat these conditions. The drugs may include:
Different brain operations are available, and many more are being researched including:
Therapy can improve muscle tone, strength, and balance. It includes exercises and stretches. There is also evidence that alternative therapies, such as tai chi,
Consider joining a support group with other people with PD. It will help to learn how others are learning to live with the challenges of PD.
Cognitive training works on aspects of the brain that control certain functions so they can be performed better in daily life. Activities are meant to promote and increase brain fitness through learning or exercises. It works best in conjunction with other healthy lifestyle habits. Some people with Parkinson's disease have seen improvements in reasoning, problem solving, processing speed, and working memory.
There are no current guidelines to prevent PD.