mixed dementia
The co-occurrence of two or more types of dementia pathology in the same patient, most commonly Alzheimer's disease and vascular dementia.
Full Definition
Mixed dementia refers to the simultaneous presence of multiple dementia pathologies in a single patient, with Alzheimer's disease combined with vascular dementia being the most frequent combination. Other combinations may include Alzheimer's disease with Lewy body pathology or frontotemporal dementia with vascular changes. Mixed dementia is more common than previously recognized and may account for a significant proportion of dementia cases in elderly patients. The condition presents unique diagnostic and treatment challenges, as symptoms may be more severe or progress differently than single-pathology dementias. Recognition of mixed dementia is important for accurate prognosis and optimal treatment planning.
Usage
Usage note: Important to recognize as distinct from pure dementia types; affects treatment approach.
In Context
- "Neuroimaging suggested mixed dementia with both amyloid plaques and significant white matter changes." — Diagnostic workup
- "The patient's rapid progression was consistent with mixed dementia rather than pure Alzheimer's disease." — Clinical assessment