i persume that you father's memory and other higher mental functions like cognition speech etc were normal before 60 yrs of age. Then this looks like a case of Alzhiemer's Type DEMENTIA
, which is usually treated with first line medication as DONEPEZIL
which in a way acts as a booster (prevents destruction of Neurotransmitter
inside the brain ). And Ct scan
wont show any thing unless he has some problems like an Evolving stroke which is unlikely. MRI however could Determine Changes in his Grey matter
which may point to the cause.
No Need to do check for UTI if he doesnt have any trouble in urinating do not complain of pain while urinating.
Hope this Helped you