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What Is Parkinson’s Disease?

Parkinson’s disease is a brain disorder that gets worse over time. It causes nerve cells in a part of the brain called the substantia nigra to die. This part of the brain is important for controlling movement. That’s why people with Parkinson’s often shake or show other abnormal movements. Treatments can help with symptoms, but there is no way to slow or reverse the condition.

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What Causes It?

No one knows exactly why a person gets Parkinson’s. It’s probably due to a mix of things, including genes and exposure to certain toxins. There’s usually no way to predict who will get it or why. It’s rare for Parkinson’s to run in families. Most of the time, it seems to happen randomly.

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Who Gets Parkinson’s?

Both men and women get Parkinson’s disease. It’s 1.5 times more common in men. It’s also more common in older people. Only about 4 out of every 100 cases happen in people under age 50. Each year, about 60,000 people in the U.S. find out they have Parkinson’s. About 1 million people in the U.S. and 10 million around the world have this condition.

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Symptoms

The four main symptoms of Parkinson’s are related to movement:

  • Tremors or shaking of hands, arms, legs, jaw, or head
  • Stiffness of arms, legs, and trunk
  • Slowed movement
  • Trouble with balance and coordination

 

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Other Signs to Watch For

People with Parkinson’s may also have:

  • Depression or other emotional changes
  • Trouble chewing, swallowing, or speaking
  • Trouble sleeping
  • Constipation
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What to Expect

Parkinson’s is a progressive disease. That means that your symptoms usually get worse over time. The symptoms of Parkinson's also vary a lot from one person to the next. How quickly it worsens and how severe it gets can vary a lot, too. Early symptoms may be easy to ignore or dismiss. They might start on one side of your body, showing up on the other side only later. 

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Diagnosis

At first, it can be hard for doctors to tell if you have Parkinson’s. That’s in part because symptoms vary so much. Other disorders also can look similar. There’s no single test for it. Your doctor might order imaging tests to rule out other conditions. They’ll also ask questions about symptoms, medications, and any exposure to toxins.

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Treatment

The nerve cells affected by Parkinson's make a chemical called dopamine. Parkinson's lowers dopamine levels in the brain. Drugs used to treat the disease generally boost those levels or replace the lost dopamine. Levodopa (L-dopa) is the most common medication. You usually take it with another medicine called carbidopa, which helps with side effects such as nausea and low blood pressure.

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Treatment: Meds to Mimic Dopamine

Some newer drugs like pramipexole and ropinirole work by filling in for dopamine. Doctors also may prescribe drugs called COMT inhibitors along with Levidopa (L-dopa), a medication that boosts dopamine levels. They work by helping to make L-dopa last longer.

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Is Surgery an Option?

If medicine doesn’t work well enough, your doctor may suggest deep brain stimulation (DBS). In DBS, your doctor implants electrodes deep in the brain. A device connected to them delivers electrical pulses. Those pulses can help control the tremors caused by Parkinson's.

In the past, doctors sometimes used other operations to damage the brain in ways to help with movement symptoms. But they rarely use those surgeries now.

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These Therapies Also May Help

Physical therapy can teach you exercises to improve strength and balance and help you stay independent. Occupational therapy shows you new ways to manage daily tasks. Speech therapy can help with slurred or unclear speech.

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Food and Exercise

Eating healthy foods can help you feel better. It may also help with certain Parkinson’s symptoms, such as constipation. Getting regular exercise will also boost strength, flexibility, and balance. Ask your doctor to recommend a physical therapist or exercise program.

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What Else Helps

Along with your regular medical care, these approaches may help with mood, energy, and how you feel day to day:

  • Massage
  • Tai chi
  • Yoga
  • Meditation
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Find Support

It can help to talk with a counselor or support group. Your doctor may know of local resources. There are also many organizations dedicated to Parkinson’s, including the American Parkinson Disease Association, the Michael J. Fox Foundation for Parkinson’s Research, and the Parkinson’s Foundation.

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Sources | Medically Reviewed on 01/07/2020 Reviewed by Melinda Ratini, DO, MS on January 07, 2020

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SOURCES:

Cleveland Clinic: “Parkinson’s Disease: An Overview,” “Speech Therapy for Parkinson’s Disease.”

National Institute of Neurological Disorders and Stroke: “Parkinson’s Disease Information Page,” “Parkinson’s Disease: Hope Through Research.”

Parkinson’s Foundation: “Understanding Parkinson’s,” “New to Parkinson’s.”

National Institute on Aging: “Parkinson’s Disease.”

Johns Hopkins Medicine: “Physical Therapy for Parkinson’s Disease.”

Davis Phinney Foundation for Parkinson’s: “Occupational Therapy for Parkinson’s.”

Mayo Clinic: “Parkinson’s Disease.”

Reviewed by Melinda Ratini, DO, MS on January 07, 2020

This tool does not provide medical advice. See additional information.

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.