Parkinson's disease is the second 1) MOST common neurodegenerative disorder. It is characterized 2) BY progressive loss of muscle control, which leads to trembling 3) OF the limbs. As symptoms worsen, it may become difficult4) TO walk and become disavled
much 6) MORE quickly. Most older. Since overall life expectancy 9) IS rising, the number of infividuals with Parkinson's disease 10) WILL increase in the future.