Vascular
Dementia
is the second most common cause of dementia in older people. Because it has a
lower profile than Alzheimer's, many people don't suspect vascular dementia
when forgetfulness becomes problematic. It's also difficult to diagnose so it's
difficult to know exactly how many people suffer from vascular dementia.
Current estimates attribute 15% to 20% of dementia cases in older adults to
vascular dementia.
Determining the
root cause, its causes, symptoms, and prognosis, can help determine the best action plan. If it's vascular dementia,
certain lifestyle changes can help prevent further damage.
What
Is Vascular Dementia?
Compared to
Alzheimer's disease, which happens when the brain's nerve cells break down,
vascular dementia happens when part of the brain doesn't get enough blood
carrying the oxygen and nutrients it needs.
Though they
happen in different ways, it is possible to have both vascular dementia and
Alzheimer's disease. Discouraging as this sounds, there is ample reason to
control the risk factors that contribute to vascular dementia. Allowing the
condition to run its course without intervention can make Alzheimer's disease
worse.
What
Causes Vascular Dementia?
Vascular
dementia
occurs when vessels that supply blood to the brain become blocked or narrowed.
Strokes take place when the supply of blood carrying oxygen to the brain is
suddenly cut off. However, not all people with stroke will develop vascular
dementia.
Vascular
dementia
can occur over time as "silent" strokes pile up. Quite often,
vascular dementia draws attention to itself only when the impact of so many
strokes adds up to significant disability. Avoiding and controlling risk
factors such as diabetes, high blood pressure, smoking, and high cholesterol
can help curb the risk of vascular dementia.
Catching the
condition early also helps limit the impact and severity of vascular dementia.
Early detection requires an awareness of risk factors and, more importantly,
efforts to keep them under control. Anyone who suspects vascular dementia
should talk with his or her doctor.
Symptoms
of Vascular Dementia
Symptoms of
vascular dementia depend on what part of the brain is affected and to what
extent. Like Alzheimer's disease, the symptoms of vascular dementia are often
mild for a long time. They may include:
- Problems with short-term memory
- Wandering or getting lost in familiar
surroundings
- Laughing or crying at inappropriate times
- Trouble concentrating, planning, or following
through on activities
- Trouble managing money
- Inability to follow instructions
- Loss of bladder or bowel control
- Hallucinations or delusions
Symptoms that
suddenly get worse often signal a stroke. Doctors look for symptoms that
progress in noticeable stages to diagnose vascular dementia. Alzheimer's, by
comparison, progresses at a slow, steady pace. Another clue is impaired
coordination or balance. In vascular dementia, problems walking or balancing
can happen early. With Alzheimer's, these symptoms usually occur late in the
disease.
Who
Is at Risk for Vascular Dementia?
Some risk
factors for vascular dementia can be managed; others, like age and gender,
cannot. Among all factors, high blood pressure carries the greatest risk;
vascular dementia almost never occurs without it.
Likewise, a high
risk of stroke goes hand in hand with risk for vascular dementia. One-quarter
to one-third of strokes are thought to result in some degree of dementia.
People who smoke, consume excessive amounts of alcohol, have diabetes, or heart
disease also have a higher rate of the condition.
Vascular
dementia most commonly occurs in people between the ages of 60 and 75. Men seem to be
more vulnerable than women, and the condition affects African-Americans more
often than other races. People whose age, sex, or race puts them at increased
risk of vascular dementia have that much more reason to manage risk factors
within their control.
Vascular
Dementia Treatment
Currently, no
available treatments can repair the damage of vascular dementia once it's
happened. Nonetheless, diagnosis provides important knowledge and the
opportunity to prevent further damage.
Prevention
typically involves bringing high blood pressure under control through exercise,
diet, and medication. The same goes for diabetes if it exists. Patients should
stop smoking and curb the use of alcohol.
Though medical
options are limited, behavioral interventions such as cues and reminders can
improve the quality of life for everyone involved. Family members and friends
can place notes in visible locations around the house with daily plans and
instructions for how to use basic items. Stepping up communication, reminding
the person with vascular dementia what day it is, where they live, and what is
going on in the family, can help keep them connected to the here and now.
Prognosis
for People with Vascular Dementia
If the
conditions that cause vascular dementia go untreated, the prognosis is not
good. A person with vascular dementia may seem to improve for periods of time
until another stroke takes away more brain function, memory, and independence.
Eventually, untreated vascular dementia usually ends in death from stroke,
heart disease, or infection.
Although
vascular dementia is a serious condition, catching it early and preventing
further damage are the best medicine. People with vascular dementia can work
with their doctors and families to detect and manage the condition.
(Source: WebMD.com)