This study examines the intersection of psychopathologies between schizophrenia and dementia, focusing on delusional and hallucinatory presentations that complicate diagnosis and treatment. Both disorders exhibit overlapping psychotic symptoms, including hallucinations and delusions, yet are driven by distinct neurobiological and cognitive underpinnings. This research aims to improve diagnostic accuracy and guide individualized therapeutic strategies for patients presenting with overlapping psychotic features. Findings emphasize the importance of tailored neuropsychological assessments and the potential benefits of adapting therapeutic approaches from schizophrenia treatment for dementia patients experiencing psychosis. This study contributes to the evolving understanding of neuropsychiatric overlaps and distinctions, underscoring the need for further research on targeted interventions.