[Treatment of psychological and behavioral symptoms in dementia with Lewy bodies and Parkinson's disease dementia: Review of the literature and consensus using the Delphi method].

Dementia with Lewy bodies (DLB) and Parkinson's disease dementia (PDD) have frequent psychological and behavioral symptoms (PBS). Treatment of these PBS is variably validated We carried out a review of the treatment of PBS in DLB and PDD from 2009 to 2023. Where the literature allowed, we made treatment recommendations. When the literature was insufficient, we used the Delphi method. The following proposals were made: for pervasive and criticized hallucinations, donepezil or rivastigmine; for delusion, and Capgras syndrome (Delphi), low doses of clozapine; for depression, sertraline, venlafaxine or mirtazapine (Delphi); for RBD, immediate-release melatonin; for frontal syndrome, sertraline or paroxetine first then trazodone (Delphi); for catatonia, lorazepam. Our group's proposals should help to improve the care of DLB and PDD PBS, and thus enhance the quality of life of patients and caregivers.