I am quite puzzled: if the demented patient passes the MMSE test or similar test, does this mean that the person is still in early stage and cannot be detected yet? Should one wait for another year or more to do another test to detect dementia verbally? Is it also possible that if one passes MMSE test, it is not dementia at all?
e.g., my Dad passed the test 2 years ago, but he is 90 and my Mom said he still forgets too just like my Mom? Old age does make people forget more. How to tell the difference?