Your participation in this study will help researchers understand genetic information about Parkinson's disease in Black and African Americans. BLAAC PD aims to generate genetic data on PD and non-PD Black and African American participants. To join this study, you must be over 18 years of age and identify as Black or African American. Subjects must have a diagnosis of PD or not have PD or any other neurological condition. The study will consist of one visit, at this visit you will be asked to answer a few questions and give a blood sample. You will not receive your genetic results.