The document discusses several neurocognitive disorders including delirium, neurocognitive disorder due to Lewy bodies, neurocognitive disorder due to Alzheimer's disease, frontotemporal neurocognitive disorder, vascular neurocognitive disorder, and neurocognitive disorder due to traumatic brain injury. It provides details on the causes, symptoms, risk factors, and treatment options for each disorder. The disorders are characterized by impairments in cognitive functioning and mental abilities caused by underlying conditions that damage brain cells or their connections.