Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier
WebMD

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started
My Medicine
WebMD

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion
    WebMD

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community
    WebMD

    Community

    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Parkinson's Disease Health Center

Font Size
A
A
A

Parkinson's Disease - Topic Overview

h9991844_002.jpg

Parkinson's disease affects the way you move. It happens when there is a problem with certain nerve cells in the brain.

Normally, these nerve cells make an important chemical called dopamine. Dopamine sends signals to the part of your brain that controls movement. It lets your muscles move smoothly and do what you want them to do. When you have Parkinson's, these nerve cells break down. Then you no longer have enough dopamine, and you have trouble moving the way you want to.

Parkinson's is progressive, which means it gets worse over time. But usually this happens slowly, over many years. And there are good treatments that can help you live a full life.

No one knows for sure what makes these nerve cells break down. But scientists are doing a lot of research to look for the answer. They are studying many possible causes, including aging and poisons in the environment.

Abnormal genes seem to lead to Parkinson's disease in some people. But so far, there is not enough proof to show that it is always inherited.

The four main symptoms of Parkinson's are:

  • Tremor, which means shaking or trembling. Tremor may affect your hands, arms, or legs.
  • Stiff muscles.
  • Slow movement.
  • Problems with balance or walking.

Tremor may be the first symptom you notice. It's one of the most common signs of the disease, although not everyone has it.

More importantly, not everyone with a tremor has Parkinson's disease.

Tremor often starts in just one arm or leg or on only one side of the body. It may be worse when you are awake but not moving the affected arm or leg. It may get better when you move the limb or you are asleep.

In time, Parkinson's affects muscles all through your body, so it can lead to problems like trouble swallowing or constipation.

In the later stages of the disease, a person with Parkinson's may have a fixed or blank expression, trouble speaking, and other problems. Some people also lose mental skills (dementia).

People usually start to have symptoms between the ages of 50 and 60. But sometimes symptoms start earlier.

1 | 2 | 3
1 | 2 | 3
Next Article:

Today on WebMD

Parkinsons disease illustration
Causes, symptoms, and treatments.
hands on walker
How does the disease progress?
 
man with serious expression
8 common questions and answers.
intelligence quotient illustration
What are the advantages of DBS?
 
Parkinsons Disease Medications
Article
Questions Doctor Parkinsons
Article
 
Eating Right
Article
Parkinsons Exercise
Article
 
daughter consoling depressed mother
Article
senior man's hands
Article
 
Parkinsons Daily
Article
Acupunture
Article
 

WebMD Special Sections