To begin with, PD has no possible cure, the treatment offered to the patients is purely temporary, to control the side-effects. Also, there is no exact cause for this disease, it could very well be genetic, or derived. For the most part, however, scientist believe that a lack of dopamine in the substantia nigra area of the brain may be the primary cause of PD. Genetics and age are also two other factors to be considered. Age cannot be used as the only factor since “about 10 percent of the nearly 1 million people living with the disease in the United States are under the age of 40” (Maes 1). To support the genetic theory “[a]pproximately 10 to 15 percent of people with Parkinson disease have at least one first-degree relative (parent or sibling)
