Hello, I'm sorry to hear that your father is experiencing these behavioral symptoms. There may be a number of reasons why he is going thru this- medication dosage or other reasons. Some of these psychosis symptoms can also be common with Parkinson's Disease. My father has experienced some of this. Often this has been when he has had a urinary tract infection. It is best if you contact your father's physician to have your father evaluated. Here are some articles that may give you some insight on the topic:
https://parkinsonsdisease.net/symptoms/cognitive-changes
https://parkinsonsdisease.net/research-studies/cognitive-impairment-scoring-system
Please let us know if there is anything else we can help with. Let us know how you father is doing. Blessings to you, Suzanne Troy, ParkinsonsDisease.net team member