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

Inclusion Criteria for Control Participants:

* Ability to provide informed consent
* Age 50 years or older
* Self-identify as Black or African American

Exclusion Criteria for Control Participants:

* Diagnosis of Parkinson's Disease and/or neurological condition
* Familial history of PD and/or neurodegenerative or psychiatric conditions
* Unknown family history of PD and/or neurodegenerative or psychiatric conditions
* Any conditions that, in the investigator's opinion, preclude the individual's ability to carry out study activities
* If submitting a saliva sample, nothing by mouth (food, drink, gum, tobacco, or smoking) for 30 minutes prior to sample collection

Inclusion Criteria for Participants with a Diagnosis of PD:

* Ability to provide informed consent
* Age 18 years or older
* Self-identify as Black or African American
* Meet the Movement Disorder Society's clinical diagnostic criteria for Parkinson's disease

Exclusion Criteria for Participants with a Diagnosis of PD:

\- If submitting a saliva sample, nothing by mouth (food, drink, gum, tobacco, or smoking) for 30 minutes prior to sample collection