This document discusses confusion, delirium, dementia, and Alzheimer's disease. It defines key terms and describes causes and symptoms of confusion and delirium. It also outlines strategies for caring for those with confusion, such as maintaining a calm environment and clear communication. Regarding dementia and Alzheimer's, the document defines dementia and Alzheimer's disease and lists their most common causes. It provides tips for caring for those with Alzheimer's like encouraging independence and maintaining routines. The document also discusses difficult behaviors associated with Alzheimer's like wandering, aggression and sundowning, and gives interventions for those behaviors.