Only 2% of the Parkinson's patients in the U.S. are under the age of 40

Parkinson's disease is a progressive neurodegenerative disease. Most people believe that this disease only affects those who are 60 years old and older. But, this isn't necessarily the case. There is approximately 2% of the Americans with Parkinson's disease who are under the age of 40. And, according to Healthline, this number might be higher because of the amount of undiagnosed cases there could be among young people. Those who are diagnosed with Parkinson's disease below the age of 50 have, what is considered as, early onset Parkinson's.