Dementia is a clinical term that describes a loss of general intelligence from a previous level. There also needs to be a memory deficit and other cognitive problems such as language or visuospatial prolems. Personality is changed and there is functional decline.
It is important to note that there are approximately 100 different causes of dementia with Alzheimer’s Disease (AD) being the number one cause. AD accounts for nearly 50-70% of all dementias and 95% of all dementias are irreversible. Examples of reversible dementias include B12 deficiency, thyroid disorder and depression.
It is important to seek a comprehensive dementia workup if there is any question that a loved one may be demonstrating signs of a dementia.