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Revision as of 22:00, 9 December 2011

For the WikiDoc page for this topic, click here

Multi-infarct dementia

Overview

What are the symptoms?

What are the causes?

Who is at highest risk?

When to seek urgent medical care?

Diagnosis

Treatment options

Where to find medical care for Multi-infarct dementia?

What to expect (Outlook/Prognosis)?

Possible complications

Prevention

Multi-infarct dementia On the Web

Ongoing Trials at Clinical Trials.gov

Images of Multi-infarct dementia

Videos on Multi-infarct dementia

FDA on Multi-infarct dementia

CDC on Multi-infarct dementia

Multi-infarct dementia in the news

Blogs on Multi-infarct dementia

Directions to Hospitals Treating Multi-infarct dementia

Risk calculators and risk factors for Multi-infarct dementia

Editor-in-Chief: C. Michael Gibson, M.S.,M.D. [1] Phone:617-632-7753; Associate Editor-In-Chief: Lakshmi Gopalakrishnan, M.B.B.S.

Overview

  • Multi-infarct dementia (MID) is a form of dementia caused by a series of small strokes.
  • Dementia is a loss of brain function that occurs with certain diseases. It affects memory, thinking, language, judgment, and behavior.

What are the symptoms of Multi-infarct dementia?

  • Symptoms may develop gradually or may progress after each small stroke.
  • The symptoms of the disorder may begin suddenly after each stroke. Some peole with MID may appear to improve for short periods of time, then decline after having more silent strokes.
  • The early symptoms of dementia can include:
  • Difficulty performing tasks that used to come easily, such as balancing a checkbook, playing games (such as bridge), and learning new information or routines
  • Getting lost on familiar routes
  • Language problems, such as trouble finding the name of familiar objects
  • Losing interest in things you previously enjoyed, flat mood
  • Misplacing items
  • Personality changes and loss of social skills
  • As the dementia becomes worse, symptoms are more obvious and interfere with the ability to take care of yourself. The symptoms may include:
  • Change in sleep patterns, often waking up at night
  • Difficulty doing basic tasks, such as preparing meals, choosing proper clothing, or driving
  • Forgetting details about current events
  • Forgetting events in your own life history, losing awareness of who you are
  • Having delusions, depression, agitation
  • Having hallucinations, arguments, striking out, violent behavior
  • Having more difficulty reading or writing
  • Having poor judgment and loss of ability to recognize danger
  • Using the wrong word, not pronouncing words correctly, speaking in confusing sentences
  • Withdrawing from social contact
  • Any of the neurologic problems that occur with a stroke may also be present.

What causes Multi-infarct dementia?

  • Multi-infarct dementia (MID) is the second most common cause of dementia (after Alzheimer's disease) in people over age 65. MID affects men more often than women. The disorder usually affects people between ages 55 and 75.
  • MID is caused by a series of small strokes.
  • A stroke is an interruption in or blockage of the blood supply to any part of the brain. A stroke is sometimes called an infarct. Multi-infarct means that many areas in the brain have been injured due to a lack of blood.
  • If blood flow is stopped for longer than a few seconds, the brain cannot get oxygen. Brain cells can die, causing permanent damage.
  • When these strokes affect a small area, there may be no symptoms of a stroke. These are often called silent strokes. Over time, as more areas of the brain are damaged, the symptoms of MID begin to appear.
  • Not all strokes need to be "silent." Larger strokes that have clear affects on strength, sensation, or other brain and nervous system (neurologic) function also can lead to MID.

Who is at highest risk?

  • Risk factors for MID include a history of:
  • Symptoms of dementia in any one person may be caused by either Alzheimer's disease or MID. The symptoms for each problem are very similar, and MID may be a risk factor for Alzheimer's disease.

When to seek urgent medical care?

  • Call your health care provider if symptoms of vascular dementia occur.
  • Go to the emergency room or call the local emergency number (such as 911) if there is a sudden change in mental status. This is an emergency symptom of stroke.

Diagnosis

  • Tests may be ordered to help determine whether other medical problems could be causing dementia or making it worse, such as:
  • Anemia
  • Brain tumor
  • Chronic infection
  • Drug and medication intoxication
  • Severe depression
  • Thyroid disease
  • Vitamin deficiency
  • Neuropsychological testing is often helpful to find out what parts of thinking have been affected, and to guide other tests.

Treatment options

  • There is no treatment to turn back damage to the brain caused by small strokes.
  • Avoid fatty foods. Follow a healthy, low-fat diet.
  • Do not drink more than 1 - 2 alcoholic drinks a day.
  • Keep blood pressure less than 130/80 mm/Hg (ask your doctor what your blood pressure reading should be).
  • Keep LDL bad cholesterol lower than 70 mg/dL.
  • Quit smoking.
  • Your doctor may suggest taking aspirin or another drug called clopidogrel (Plavix) to help prevent blood clots from forming in the arteries. These medicines are called antiplatelet drugs. DO NOT take aspirin without talking to your doctor first.
  • Manage behavior problems, confusion, sleep problems, and agitation
  • Modify the home environment
  • Support family members and other caregivers
  • Medications may be needed to control aggressive, agitated, or dangerous behaviors. The health care provider will usually prescribe these medicines in very low doses and adjust the dose as needed. Such medications may include:
  • Hearing aids, glasses, or cataract surgery may be needed if the person has sensory problems.

Where to find medical care for Multi-infarct dementia?

Directions to Hospitals Treating Multi-infarct dementia

What to expect (Outlook/Prognosis)?

Some improvement may occur for short periods of time, but the disorder will generally get worse over time.

Possible complications

Complications include the following:

  • Future strokes
  • Heart disease
  • Loss of ability to function or care for self
  • Loss of ability to interact
  • Pneumonia, urinary tract infections, skin infections
  • Pressure sores

Prevention

  • Control conditions that increase the risk of hardening of the arteries (atherosclerosis) by:
  • Controlling high blood pressure
  • Controlling weight
  • Reducing saturated fats and salt in the diet
  • Treating related disorders

Source

http://www.nlm.nih.gov/medlineplus/ency/article/003255.htm

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