Hello Felix: I'm sorry your dad is having such a difficult time. I don't know how old your dad is, of course. I'm an older person myself... perhaps older than your dad. I'm certainly no expert with regard to this sort of thing. But I believe some of the experiences your dad is having can also be symptomatic of senior dementia. Plus just the fact that he is recovering from cancer is, no doubt, having a significant impact. It was a not-all-that-serious bout with cancer that started my downhill slide years ago.

I don't know what your relationship with your dad is or if he has given his permission for his medical / mental health providers to talk with you. If he has not / will not, there may not be much you can do. If he has, or if he will, then yes I think it would be perfectly appropriate for you to discuss your concerns with his doctor & / or other medical / mental health care providers.

I don't know what types of services are available where your dad lives. But perhaps there could be some in-home care that could be arranged for him. I've had some experiences handling situations such as this for older relatives in years past. It can be challenging to figure out what can be made available & to make arrangements for it. I can require large amounts of phone work. But it can be beneficial.

I see this is your first post here on PC. So... to PsychCentral… from the Skeezyks! May the time you spend here be of benefit.

PsychCentral is a great place to get information as well as support for mental health issues. The more you post, & reply to other members’ posts, the more a part of the community you will become. Plus there are social groups you can join & chat rooms where you’ll be able to connect with other PC members in real time (once your first 5 posts have been reviewed & approved.) Lots of great stuff! So please keep posting!