Real or imagined: We need a new scale for psychosis in Parkinson's disease.

Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Gregory Pontone reports a relationship with ACADIA Pharmaceuticals Inc that includes: consulting or advisory. Gregory Pontone reports a relationship with GE Healthcare that includes: consulting or advisory. Kelly Mills reports a relationship with Tilosia that includes: consulting or advisory. Ruth Schneider reports a relationship with ACADIA Pharmaceuticals Inc that includes: funding grants. Ruth Schneider reports a relationship with Pfizer Inc that includes: funding grants. Ruth Schneider reports a relationship with Biohaven Ltd that includes: funding grants. Ruth Schneider reports a relationship with ESCAPE Bio that includes: consulting or advisory. none.