What is Parkinson's disease?
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. 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 a period of many years. And there are good treatments that can help you live a full life.
What causes Parkinson's disease?
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 inherited.
What are the symptoms?
Tremor may be the first symptom you notice. It is one of the most common signs of the disease, although not everyone has it. Tremor often starts in just one arm or leg or only on 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 have a decrease in mental skills (dementia).
How is Parkinson's disease diagnosed?
There are no lab tests that can help your doctor know that you have Parkinson’s. But you may have tests to help your doctor rule out other diseases that could be causing your symptoms. For example, you might have an MRI to look for signs of a stroke or brain tumor.
Parkinson disease (PD) is an age-related deterioration of certain nerve systems, which affects your movement, balance, and muscle control.
Parkinson disease is one of the most common movement disorders, affecting 1% of people older than 60 years.
In parkinson, brain cells deteriorate (or degenerate) in an area of the brain called the substantia nigra.
Parkinson is about 1.5 times more common in men than in women, and it becomes more common as you age.