Treatment of hemorrhoids is divided by the cause of symptoms, into internal and external treatments. Accurately classifying a patient's symptoms and the relation of the symptoms to internal and external hemorrhoids is important.
Note also that the average life expectancy after being diagnosed with Parkinson's is about 9 years -- hence, those who participated were already at this point at the beginning of the study.
One clear risk factor for Parkinson's disease is age. The average age of the onset of the disease is 60 years, and the incidence rises significantly with increasing age. However, about 5-10 percent of people with Parkinson's disease have an early-onset of the disease, which begins before the age of 50. Early-onset forms of the disease are often, though not always, inherited, and some have been linked to specific gene mutations.