A dementia such as Alzheimer's disease is difficult to diagnose. A number of diagnostic tests are carried out to see what is wrong with a patient who seems to be presenting with signs and symptoms of dementia.
At the present time an autopsy is the only test that can confirm a diagnosis of Alzheimer's. The autopsy will show the typical signs of cerebral shrinkage and destruction of brain cells.
Alzheimers disease is therefore often diagnosed by a process of elimination. Your family doctor, or specialist neurologist or gerontologist, and their multidisciplinary teams include information from such things as:
Once a diagnosis is made it has it is usually 80% to 90% accurate. An autopsy is the only way it which the diagnosis can be confirmed.
Further information about diagnostic tests for Alzheimer's disease