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What chemicals allow neurons to talk to each other?

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What chemicals allow neurons to talk to each other?

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Some of these dying neurons produce, a chemical that sends messages to the part of the brain that controls movement and coordination, called dopamine. As the disease progress, the amount of dopamine produced in the brain decreases, causing the person to be unable to control movement normally.

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- http://www.mayoclinic.org/diseases-conditions/parkinsons-disease/basics/symptoms/con-20028488
- http://www.pdf.org/about_pd
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What area of the brain is the source of Parkinson’s disease?                                                                                                                                                                                  

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What area of the brain is the source of Parkinson’s disease?                                                                                                                                                                                  

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Parkinson’s involves the death of vital nerve cells in the brain, known as neurons. Parkinson's affects neurons in an area of the brain called the substantia nigra.

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What are the symptoms of Parkinson’s disease?

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What are the symptoms of Parkinson’s disease?

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Shaking. It usually begins in hands or fingers. People may notice a back-and-forth rubbing of their thumb and forefinger. One characteristic of Parkinson's disease is a shaking of the hand when it is relaxed.

Slowed movement. Over time, Parkinson's disease may reduce your ability to move. Steps may become shorter when the person walk, or you may find it difficult to get out of a chair.

Muscle Stiffness. May occur in any part of your body. The stiff muscles can limit range of motion and cause pain.

Impaired Balance. Balance problems may occur as a result of Parkinson's disease.

Loss of automatic movements. A decreased ability to perform movements such as blinking, smiling or swinging your arms when walking.

Speech changes. Speech problems my occur as a result of Parkinson's disease. Speaking softly, quickly, slur or hesitate before talking.

Writing changes. It may become hard to write, writing may appear small.