need to wait until symptoms become severe.
## How Dementia Is Evaluated
There is no single test that diagnoses every type of dementia.
An evaluation may include:
* discussion of symptoms and medical history
* information from family members
* cognitive or memory testing
* physical and neurological examination
* review of medications
* blood tests
* assessment for depression or other conditions
* brain imaging when appropriate
Doctors may also evaluate hearing, vision, sleep, and other factors that can affect cognition.
## Why Early Evaluation Matters
Getting evaluated early does not mean assuming the worst.
It can help identify
