Association Between Bipolar Disorder and Parkinson's Disease: A Review of Dopaminergic Mechanisms and Clinical Implications

This literature review examines the association between bipolar disorder and Parkinson's disease, focusing on their shared dopaminergic dysfunction in nigrostriatal and mesolimbic pathways. Recent analyses and meta-analyses show increased risk of developing Parkinson's disease in bipolar disorder patients, though differentiating idiopathic from medication-induced parkinsonism requires careful evaluation including DAT scans.