What is Alzheimer's Disease?
Alzheimer's disease (AD) is a specific type of dementia and the most common form. It is a progressive, degenerative disease that causes slow decline of nerve cells in the brain. Individuals with AD experience progressive and irreversible loss in thinking abilities, including language and memory. Changes are also witnessed in mood, personality, sleep-wake cycles, and behavior. In AD, nerve cells involved in learning and short-term memory are affected early which is the reason memory loss is an early symptoms of Alzheimer's disease.
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What is Vascular Dementia?
Vascular dementia, the second most common type of dementia, is associated with problems in the circulation of blood to the brain (cerebrovascular disease). Risk factors for this type of dementia include: high blood pressure, diabetes mellitus, high cholesterol, history of transient ischemic attacks (TIA), heart rhythm abnormalities, and evidence of disease in arteries elsewhere in the body.