Black and African Americans Connections to Parkinson's Disease (BLAAC PD)

This study is working to better understand Parkinson's disease in Black and African American communities, who have historically been underrepresented in research. Researchers are collecting data and biological samples (like saliva) to study genetic, environmental, and social factors that may influence the development and progression of Parkinson's disease in this population. **You may be eligible if (as a healthy control participant)...** - You are 50 years or older - You self-identify as Black or African American - You do not have Parkinson's disease or any known neurological condition - You do not have a family history of Parkinson's or other neurodegenerative disorders **You may be eligible if (as a participant with Parkinson's disease)...** - You are 18 years or older - You self-identify as Black or African American - You have been diagnosed with Parkinson's disease based on standard clinical criteria **You may NOT be eligible if...** - You have a known neurological condition (for the control group) - You have family history of neurodegenerative disease (for the control group) - You are unable to provide informed consent Talk to your doctor to see if this trial is right for you.