My dad was basically calm about my mother's death several months ago. He did cry a bit at the time, but then seemed to accept it and didn't get very emotional, so we decided to tell him the truth when he asked about her. Now he has suddenly started looking for her and when I tell him about her, he starts crying a bit and goes to his room. Would this be a dementia thing or delayed grief? Before the pandemic he did see the hospice grief counselor but he never got him to open up much about my mom. He did tell him about their first date, but never showed any emotion, so his grief now is kind of a shock to us. If we try to hedge an answer about her to cover up the death - he can sense it and tells us that something is not right and he wants the truth. He does not have a short term memory basically.
All too often the early stages of dementia can be missed. People are often good at "covering up" for short periods of time, say a visit, dinner, doctor visit, etc. Our mother seemed fine, but between errors in managing her finances and repetition during phone calls, I was suspicious. Once we took the car away (she was already just over 90 and unexplained mostly minor damage to the car said it was time, before she killed someone or herself!), I had to take her shopping or bring supplies. Buying stuff and/or asking for items she already had plenty of were also indicators. There were other instances preceding this that could have been little warning signs, but I only made the connection later after learning about dementia (accusing others of taking items for instance.) Finding things in the freezer unused and shriveled up veggies in the fridge that she bought the last time helped me realize she was no longer cooking - just eating frozen meals and boxed stuff.
Ruling out UTI is good (hopefully that can be rechecked at some point, or they did a culture, not just the dipstick test.) UTIs do really odd things! Mom's first after moving to MC resulted in sun-downing to the max! The last 2 resulted in night time bed wetting.
Depression - although some people might recognize this in themselves and admit it, I think the majority of people really don't think they are depressed or need help. Asking him and/or having someone try to get him to talk about it likely isn't going to be very productive.
I'm not a doc, only have experience with my mother and what I have learned here and online, but it does sound like your father might be in the early stages of some form of dementia (or possibly a stroke?) The short-term memory loss, easy to cry when frustrated or told about his wife's passing could be how it manifests in him. Although there are common symptoms for the various stages of dementia, not everyone experiences them and they don't always follow a pattern. Each person has their own journey.
Rather than subject him to intensive testing, there are simple tests his regular doctor can do (and you can access some of these online and try them too) which can identify cognitive issues. If desired you could pursue this further, as sometimes the cause behind the memory issues is treatable. IF it is dementia/AD, there is no cure. Learn all you can about it so you know what to expect and how to deal with it when it happens.
When we were hiring aides to try to keep mom in her condo, they sent a nurse who did the testing with us there in her condo (Medicare did cover this.) She confirmed what I suspected and made some suggestions, like a timed/locked med dispenser. At that time, the signs/symptoms were minimal, but definitely a flag to what was coming! The aides didn't last 2 months, when she refused to let them in. In her mind, she was fine. She's now just over 4.5 years in MC, doing well enough, but clearly living in the past (at least 40 years ago!)
Hopefully he lives with you for now, so you can monitor him better. When he asks about his wife, it would be best to try to deflect and/or fib about it. From what you have written, he sometimes seems to see through this. Although some insist we tell the "truth", personally when it comes to dementia I think it is best to avoid it, IF you can fib your way around it. Because they don't remember, it is painful for them every time they are told again. When my mother asks about those long gone, I use some excuse or brush off to get past it and try to change the subject. Her mother has been gone over 40 years, so that's a tough one. She's also the only one left of that gen on both sides!
From my experiences-
my father in law took care of my mother in law who was confined to a wheelchair at the end of her life. He was in great physical shape.
We always thought she was being very bossy telling him what to do.
We began to realize after he was gone, she was being bossy was because he had early stage Alzheimer’s.
May God grant you grieving mercies and strength during this difficult time.
I am happy to hear that hospice care was a blessing for you and your family.
I was depressed after my wife's death from AD. Could that be your dad's issue also? Depression can cause cognitive problems like short term memory loss. At this time, I wouldn't consider dementia until he was evaluated for depression by a psychologist. I would maybe call the hospice counselor back also to see if she/he could help with his grief. After the death of a spouse, lonliness is the biggest obstacle for the survivor. Often times, reminiscing helps, like when he talked about their first date.
Don't jump on the dementia bandwagon yet until his grief is better addressed and depression is ruled out (although I don't know how it could be).
However, it could also be a urinary tract infection, so rule out any medical conditions 1st. UTI looks a lot like dementia. My mom ended up in the hospital with UTI, dehydration and kidneys shutting down after her husband died. They just don't take the same care because they are grieving.
I hope it is a simple UTI and not the journey of dementia. Best of luck!
How long had she been ill?
Often caring for someone they are more able to "hide" signs of dementia since they are on a routine that rarely changes they can handle the tasks.
There is also evidence that the caregiver of a person with dementia often develops dementia as well. (I'm not sure if this is age related or the deprivation of activity and conversation I have not read more detail about it)
If he has not seen his doctor in a while I would schedule that.
If the Hospice is doing a Bereavement Support Group get him involved with that.
But also keep in mind there is no "schedule" for grief. But the fact that he continues to look for her leads me to believe that there may be some dementia involved.
Condolences on the loss of your mom.