Mixed dementia is a condition in which abnormalities characteristic of more than one type of dementia occur simultaneously. Physicians may also call mixed dementia “Dementia — multifactorial.”
In the most common form of mixed dementia, the abnormal protein deposits associated with Alzheimer’s disease coexist with blood vessel problems linked to vascular dementia. Alzheimer’s brain changes also often coexist with Lewy bodies. In some cases, a person may have brain changes linked to all three conditions — Alzheimer’s disease, vascular dementia and dementia with Lewy bodies.
Researchers don’t know exactly how many older adults currently diagnosed with a specific type of dementia actually have mixed dementia, research suggests that the condition may be significantly more common than previously realized.