Brain Diseases [Disease/Finding] Dementia [Disease/Finding] C2006 Dementia M0005797 C0497327 Dementia 1022551 Amentia D003704 N0000000914 52448006 An acquired organic mental disorder with loss of intellectual abilities of sufficient severity to interfere with social or occupational functioning. The dysfunction is multifaceted and involves memory, behavior, personality, judgment, attention, spatial relations, language, abstract thought, and other executive functions. The intellectual decline is usually progressive, and initially spares the level of consciousness. Delirium, Dementia, Amnestic, Cognitive Disorders [Disease/Finding]