Vascular Dementia

Vascular dementia is a condition that affects the brain's blood vessels and leads to problems with thinking and memory. It occurs when blood flow to parts of the brain is reduced or blocked, causing brain cells to be damaged or die. This damage can result from strokes or other blood vessel diseases. People with this condition may have difficulty with memory, problem-solving, and decision-making. It mainly affects the brain, which controls all body functions and mental abilities. Symptoms often develop suddenly or worsen in steps, reflecting the underlying blood vessel problems. Understanding this condition helps explain why changes in thinking and behavior happen after a stroke or other vascular injury.

Vascular dementia is a form of dementia caused by cerebrovascular disease leading to impaired cerebral blood flow and subsequent neuronal injury. It is characterized by cognitive decline resulting from ischemic or hemorrhagic brain lesions, often due to multiple infarcts or chronic small vessel disease. The core pathology involves vascular occlusion, hypoperfusion, or hemorrhage causing focal or diffuse brain damage. Clinically, it presents with stepwise cognitive decline, executive dysfunction, and focal neurological signs. It is the second most common cause of dementia after Alzheimer's disease and is frequently associated with hypertension, diabetes, and atherosclerosis. Diagnosis requires correlation of clinical features with neuroimaging evidence of vascular brain injury.