A Guide for Understanding Parkinson’s Disease Psychosis Hallucinations & Delusions What is Parkinson’s disease psychosis? Parkinson’s disease psychosis is a non-motor symptom of Parkinson’s disease that causes patients to experience hallucinations and/or delusions. More than half of all patients with Parkinson’s disease eventually develop symptoms over the course of their disease.1 Diagnosing and treating this … Continue reading Psychosis