Most cases of Parkinson’s disease (PD) occur due to an unknown cause. Although researchers know that both hereditary and environmental factors influence a person’s risk for developing Parkinson’s, they don’t fully understand why some people get Parkinson’s and others don’t.

If you’re living with Parkinson’s disease (or you care for someone who has PD), you might be curious about what the research says regarding potential causes of the condition. Take this five-question quiz to better understand what may cause Parkinson’s.

Talk With Others Who Understand

MyParkinsonsTeam is the social network for people with Parkinson’s disease and their loved ones. On MyParkinsonsTeam, more than 75,000 members come together to ask questions, give advice, and share their stories with others who understand life with Parkinson’s.

Do you have a family history of Parkinson’s? Share your experience in the comments below, or start a conversation by posting on your Activities page.