A friends mom (who is much older) has very similar symptoms.Don't get me wrong here, I'm not saying they have the same thing, but what I'm saying is that it is easy to think something is psychiatric when in fact it is neurological. They think she had TIA attacks with progressive dementia or Lewy body dementia. At first they thought she had something in the psychiatric field.

My grandfather who died when I was little was put in a mental hospital and 20 years after his death, "they" realized he had must have had frontotemporal dementia. It's just too easy to get away with giving a psychiatric diagnosis. You can't really disprove that diagnosis, it is a dead end diagnosis until more stuff starts to pop up.

My friend's mom was lucky if there is such a thing with this, she got the proper care while my granddad was seen as totally crazy and a lost cause, he didn't even get love and understanding.

If your wife has delusions of a psychiatric nature or neurological no one can say by reading, but I would want to push for an explanation what causes the delusions.