Dementia is diagnosed by monitoring the changes in a patient's cognitive function
There is no test for dementia and no cure. Medical professionals diagnose Alzheimer’s and other types of dementia with a physical examination, laboratory tests, and by monitoring changes in everyday function and behavior. Dementia can be diagnosed with a high level of certainty, but it is difficult to determine the type of dementia you may have.
Alzheimer disease, one of the most progressive forms of dementia, has no treatment that stops its progress. There are, however, drug treatments that may temporarily improve the symptoms. Trying to find out why dementia attacks people’s brains requires ongoing research, and funding and increased participation in clinical studies are still needed.