Serotonergic dysfunction in patients with impulse control disorders in Parkinson's disease.

ABSTRACT: Impulse control disorders (ICDs) are frequent and particularly distressing neuropsychiatric symptoms in patients with Parkinson's disease, which are related to impaired behavioural inhibition. Multiple PET imaging studies indicate that striatal dopaminergic abnormalities contribute to hyperdopaminergic functioning in Parkinson's disease patients with ICD (PDICD+) and to the dysregulation of the limbic fronto-striatal networks, which are critical for reward-related decision impulsivity. However, the serotonergic system is central to response inhibition and plays a critical role in neuropsychiatric symptoms in PD, but its role remains undetermined in PDICD. We hypothesized that PDICD+ patients exhibit serotonergic dysfunction within the cortico-striato-pallido-thalamic circuits involved in t

SUBMITTER: Prange S 

PROVIDER: S-EPMC12129733 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature