Dad lives in assisted living with moderate dementia. If I take him out for lunch and errands he tells me that he has to pee. We can be gone 3-4 hours and he will go to the bathroom about once an hour. I do not follow him into the bathroom to hear if he actually pees or not. He does not complain of any UTI symptoms. He is 86 and I do not think he drinks a lot of fluids unless prompted.
In the elderly, UTI does not have the same symptoms such as fever anymore. However, frequent urination is a symptom of UTI.
Have him seen, and fast. Don't let this go.
www.agingcare.com/articles/What-Men-Need-to-Know-About-Bladder-Control-133145.htm
My first thought was about prostate issues?