Psychosis and Personality Changes Following Traumatic Brain Injury.

Psychotic disorders following traumatic brain injury (TBI) are a significant concern in psychiatry, with chronic sequelae often overlooked. The pathophysiology of post-TBI psychosis involves neuroplasticity and neuronal remodeling, potentially exacerbating vulnerabilities to chronic psychotic disorders. Differentiating post-TBI psychosis from primary schizophrenia and other psychotic conditions is crucial for appropriate treatment. This case report discusses a 63-year-old male with a history of TBI from a gunshot wound sustained in adolescence, who later developed schizophrenia. The report explores the patient's psychiatric symptoms, cognitive dysfunction, personality changes, and imaging findings. The report examined the complex relationship between TBI and psychotic symptoms, considering genetic, neurobiological, and psychosocial factors. The potential for TBI to increase the risk of psychotic conditions, especially in genetically predisposed individuals, was discussed. The challenges in establishing a direct causal link between TBI and schizophrenia were addressed.