Domain 5. Perception/Cognition Class 4. Cognition00129Chronic confusion(1994)DefinitionIrreversible, longstanding, and/or progressive deterioration of intellect and personality characterized by decreased ability to interpret environmental stimuli and decreased capacity forintellectual thought processes, and manifested by disturbances of memory, orientation, and behavior.Defining Characteristics Alteration in interpretation Alteration in long-termmemory Alteration in personality Alteration in response tostimuli Alteration in short-termmemory Chronic cognitive impairment Impaired social functioning Normal level of consciousness Organic brain disorder Progressive alteration incognitive functioningRelated Factors Alzheimers disease Brain injury (e.g.,cerebrovascular impairment, neurological illness, trauma,tumor) Cerebral vascular accident Korsakoffs psychosis Multi-infarct dementia