Conversation: The conversation between human and AI assistant.
[|Human|] my elderly dad is in the hospital due to cancer and chemo.  hes there because he has fallen a lot and no appetite.  hes been in the hospital for 6 days.  he has now started to talk & see things that are not there  he thinks his dad is still alive and thinks my mom (his wife) is dead.  he also calls me my daughters name.  this seems to come about in the early evening.  is this normal for the elderly?
[|AI|]  Hi!! The behavior of your dad is NOT that seen in normal elderly people. It seems to be due to high dose chemotherapy used for cancer treatment. Sometimes patients experience changes in their ability to remember or concentrate after they have chemotherapy. Acute onset cognitive changes occur suddenly during treatment with certain medications and chemotherapy agents, and may be reversible. Symptoms include: Fluctuating alertness and orientation, Difficulty concentrating, Unusual sleep patterns, Agitation,Confusion, Memory loss and Hallucinations or seeing things that are not really there as your father is experiencing. Hope your query is answered!