Vascular Dementia

Vascular dementia is a type of dementia. It is caused by disease of the small blood vessels in the brain. Parts of the brain called white matter along with grey matter are injured by multiple small strokes.

  • Causes

    Vascular dementia occurs when cells below the surface of the brain's cortex die because they do not receive enough oxygen and nutrients. This process is due to hardening
    and narrowing
    of the blood vessels within the white matter of the brain. This affects the blood supply.

  • Definition

    Vascular dementia is a
    dementia. It is caused by disease of the small blood vessels in the brain. Parts of the brain called white matter along with grey matter are injured by multiple small

    Healthy and Injured Brain Blood Vessels
    Blood Flow and Lack of Blood Flow to the Brain
    Copyright © Nucleus Medical Media, Inc.

  • Diagnosis

    The symptoms of vascular dementia can resemble other causes of dementia, such as
    Alzheimer’s disease.

    Your doctor will ask about your symptoms and medical history. A physical exam will be done.

    Pictures may be taken of your brain and bodily structures. This can be done with:

    • MRI scan
    • CT scan
    • Single photon-emission computed tomography (SPECT)
    • Ultrasound

    Your heart and brain activity may be evaluated. This can be done with:

    • Echocardiogram
    • Electrocardiogram
      (EKG)—to measure electrical activity of the heart
    • Electroencephalogram
      (EEG)—to measure electrical activity of the brain
    • Neuropsychological testing

    Your bodily fluids may be tested. This can be done with blood tests.

  • Prevention

    There are no definitive guidelines to prevent vascular dementia. However, the following may help reduce your risk:

    • Don’t smoke.
      If you smoke, talk to your doctor about how you can successfully quit.

    • Eat a diet that is
      low in fat
      low in salt.
    • If you drink alcohol, do so only in moderation. Moderate alcohol intake is two drinks per day for men; one drink per day for women.
    • Have your blood pressure and blood cholesterol levels checked at least once a year.
    • If you have diabetes, maintain your blood glucose in your target range.

    • Avoid low blood pressure. If you get lightheaded when you stand up, or have a history of
      fainting, talk to your doctor.

  • Risk Factors

    Factors that may increase your chances of developing vascular dementia include:

    • Increased age
    • High blood pressure—the most closely associated risk factor
    • Alzheimer’s dementia—can occur along with vascular dementia
    • Cardiovascular disease
    • Hardening of blood vessels—atherosclerosis and lipohyalinosis
    • Diabetes
    • Smoking
    • Conditions that cause the blood to clot
    • Genetic disorders

  • Symptoms

    In some people, symptoms appear suddenly with neurologic changes like those caused by a stroke. Sometimes, the small strokes that lead to vascular dementia can happen without other symptoms. This makes the condition difficult to detect.

    In some cases, symptoms may stabilize or even improve. However, in most people, the disease continues to progress.

    The main symptoms of vascular dementia include:

    • Progressive loss of
      intellectual abilities, processing speed, and cognitive and motor abilities
    • Progressive memory loss
    • Slow, unsteady walking

    Other symptoms that may be present include:

    • Incontinence
    • Personality changes
    • Laughing, crying, or smiling during inappropriate times
    • Difficulty speaking
    • Swallowing difficulties
    • Paralysis
      or weakness of one or both sides of the body
    • Loss of interest in activities
    • Inactivity
    • Depression
    • Tremors, loss of coordination, loss of trunk mobility
    • Seizures
    • Nighttime confusion
    • Paranoia
    • Disorientation

  • Treatment

    There is no known cure for vascular dementia. Reducing risk factors and symptoms are important in trying to slow disease progression and improve quality of life.

    Medications can be given to help limit or control symptoms and possibly slow progression of the disease. These include:

    • Medications to control:

      • Hypertension
      • Heart arrhythmias

      • Stroke risk, such as by using
      • Increased cholesterol
      • Conditions that cause the blood to clot
      • Diabetes
    • Antidepressant medications
    • Nimodipine—may help improve cognitive function in the short-term, but lacks evidence to support its long term use
    • Medications used to treat Alzheimer's disease, such as