Vascular dementia progresses in early, middle, and late stages, starting with mild confusion and memory issues, then worsening to poor judgment and difficulty with daily tasks, and eventually leading to severe cognitive decline and dependence. It often worsens in a step-like pattern because each decline may be caused by new strokes or reduced blood flow to the brain. Caregivers can prepare by ensuring safety, adapting routines, and planning increasing support, while managing conditions like blood pressure and diabetes, healthy lifestyle, and regular treatment may help slow progression and improve quality of life.