Definition: A general term that describes a brain syndrome characterized by problems with memory, judgment, language, orientation, and executive functioning. Alzheimer's disease is the most common cause of dementia, but dementia can also be caused by strokes, Parkinson's disease, head injury, or a host of other conditions -- very few of which are reversible.
Also Known As: Dementia used to be called senile dementia, but this phrase is rarely used anymore because it implies that dementia is a natural part of growing old. When dementia is due to two or more medical conditions, it is referred to as mixed dementia.
