Vascular dementia is a type of cognitive decline caused by reduced blood flow to the brain, often due to strokes or other conditions that damage blood vessels. This lack of blood flow can lead to problems with thinking, memory, and reasoning, making it difficult for individuals to perform everyday tasks. Symptoms of vascular dementia can vary but may include confusion, difficulty concentrating, and memory loss. Unlike Alzheimer's disease, which is characterized by gradual memory loss, symptoms of vascular dementia can occur suddenly after a stroke or develop gradually over time. Early diagnosis and management can help improve quality of life.