Parkinson’s disease (PD) is a neurodegenerative disorder that affects predominately dopamine-producing (“dopaminergic”) neurons in a specific area of the brain called substantia nigra. … People with PD may experience: Tremor, mainly at rest and described as pill rolling tremor in hands.
Parkinson’s disease is the second most common age-related neurodegenerative disorder after Alzheimer’s disease. An estimated seven to 10 million people worldwide have Parkinson’s disease.
The prevalence of the disease ranges from 41 people per 100,000 in the fourth decade of life to more than 1,900 people per 100,000 among those who are 80 and older.
The incidence of the disease, or the rate of newly diagnosed cases, generally increases with age, although it can stabilize in people who are older than 80. An estimated 4 percent of people with Parkinson’s are diagnosed before age 50.
Men are 1.5 times more likely to have Parkinson’s than women.
Source of information: www.parkinsons.org