His memory is good he is 88 and still does whatever he wants. But here lately he been remembering things that never happened and telling detailed stories about stuff that never happened. And can’t believe why we don’t remember it happening. He thinks we are the ones with memory problems. Is this something we should be concerned about? Does this sound like Alzheimer's or dementia?
Also, dad was aging fast in his own mind. He told a friend before a church service he was 127. After the service we asked him again and he said he was 163. He was 82 when he passed away but about 10 days earlier insisted he was 273 years old. We just laughed and let it go.
He may be forgetful and mixing memories. However, that is not always dementia. It may simply be a failing memory,
Without a positive diagnosis of dementia or alzheimers you can not be sure. So get him to a doctor for testing and brain imaging.
Suggesting that you get a positive diagnosis is the only helpful suggestion anyone can offer here. Unless they are psychic.
I once had a client in her late 40s who insisted her father was making up stories, but amazingly when tested, it turned out he was right ,and she was the one who forgot the story.
Testing showed she had early onset dementia.
Early onset alzheimers is very common. Certain forms of dementia associated with other diseases or disorders can start in the 20s.
https://www.alz.org/alzheimers-dementia/10_signs
My mom had the same issue - I call it 'Chinese menu memory' like the old menus ... something from colums A, from B, from C - if you listen closely then think it out you can see that it is several memories combined together & it may take time
An example: in mom's case she said to me "your father is a real bastard ... he didn't even go to his own brother's funeral" - all 3 of us had gone so I knew it was untrue but she combined that funeral memory, with the fact dad didn't deliver a toast to the bride [as a surgeon he was called to do an emergency operation] and the fact her dementia had turned her thoughts that he was 'bad' - it took me a long time to remember about that speech he didn't give as it happened at least 45 years before she came out with this
To her its real. Frustrating, but you just have to go along.
There could allot factors involved. The first step is convincing him to see a doctor for a physical. You may suggest to him to get a full work up and include a cat scan, and blood work.
Also get POA ASAP
Living with people who have dementia isn't easy, but it is possible. I'm sure there are thousands of people in the US who deal with loved ones who have dementia (and we've all got our stories, and we've survived). I tell myself, that likely I'll be the same way someday, and I sure hope my children learned from the way I treated my parents (and other's) that this is the way we should all treat the elderly.
The diagnosis explained what was going on, but it didn’t make the behavior stop. The conflation of whatever it was that prompted his “memory” persisted. So your dad will probably continue to have these unreliable memories. My FIL went on to have quite a few false memories over the years before he passed and he firmly held that all of them were true and we were the ones who were mistaken or, in my case, denying reality. It can be bizarre, but if the memories are harmless, it might be best to just roll with them. They aren’t going away.
Have Dad evaluated for dementia. It’s not easy to accept, but you need to know. You need to plan for his future, and the sooner you know, the better for Dad and you.