What Is Vascular Dementia And What Are The Symptoms?

Dementia is the deterioration of cognitive functions such as memory, reasoning, and problem-solving which impacts day-to-day activities. Amongst these various forms of dementia, one that results from a decrease in blood flow to the brain is vascular dementia. It occurs when blood vessels supplying the brain are damaged or blocked, causing cells to die in those regions. Unlike Alzheimer's, whose cases are attributed to protein plaques and tangles in the brain, vascular dementia is primarily associated with problems in the brain's blood supply.

What is Vascular Dementia?

Vascular dementia is the second most common cause of dementia after Alzheimer's disease. Vascular dementia happens when insufficient blood reaches the brain, disrupting normal brain functions due to damaged blood vessels. The brain requires a steady supply of oxygen and nutrients from the blood.  Sudden disruptions, such as strokes, or gradual damage from chronic conditions can lead to cognitive issues.

Vascular Dementia: Causes and Risk Factors

There are various underlying causes of vascular dementia, and knowledge of these can be informative in identifying at-risk populations and facilitating prevention.

Strokes

A stroke occurs when the brain’s blood supply is interrupted, either by a clot or internal bleeding. Multiple small strokes, or silent or minor strokes (also called lacunar strokes), are significant contributors to vascular dementia, as they damage cognitive areas over time. Impairment of cognition will follow the stroke, which could eventually progress into vascular dementia if it damages part of the brain. These impairments may result from small and silent strokes that do not display overt symptoms.

Blockages in Arteries

Obstruction of blood vessels to the brain badly impairs its functioning. Such obstructions tend to occur because of the accumulation of fats within the walls of arteries, known as atherosclerosis.As these plaques grow, they can block blood flow to the brain, depriving brain cells of oxygen and nutrients. It causes the death of the cells in the brain and ultimately leads to cognitive impairment.

Hypertension

High blood pressure or hypertension is one of the most important risk factors for vascular dementia. Gradually, hypertension damages the blood vessels and thus increases the chances that it may get blocked or ruptured. Repeated, unnoticed strokes may accumulate, leading to cognitive impairment. This adds clarity. Thus, managing blood pressure becomes very important for reducing the risk of vascular dementia.

Diabetes

The presence of diabetes also contributes to the risk of developing vascular dementia. People diagnosed with the condition have more blood sugar present in their bodies, which can damage blood vessels spread throughout the body and even in the brain. This increases the risk of stroke and other diseases that decrease the rate of blood flow into the brain, thereby increasing the risk of vascular dementia.

Other Risks

There are many other causes of vascular dementia apart from those mentioned above, including:

• Smoking: Smoking damages blood vessels, increasing the risk of strokes and heart disease, which can lead to vascular dementia.
• Obesity: Many clients with excess body weight have a higher risk of high blood pressure, diabetes, and heart diseases which can lead to vascular dementia.
• Family History: A family history of stroke or heart disease increases the risk of vascular dementia. This is because these conditions might be hereditary.

What are the symptoms of vascular dementia?

The symptoms of vascular dementia depend on the severity of an area of brain damage. However, the condition usually presents with a combination of cognitive as well as physical symptoms.

Cognitive Symptoms

Vascular dementia mainly affects memory, reasoning, and problem-solving skills. These include:

• Loss of memory:Individuals with vascular dementia often experience short-term memory loss. They could recall the events of the past in great detail but forget what was discussed or assigned to do just a few minutes ago.
• Difficulty with problem-solving and decision: It is not easy for them to analyze any situation and make decisions regarding it when implementation requires more than one step.
• Lack of judgment: People will begin making decisions that are logically or socially inappropriate, but mostly due to impaired cognitive capacity.
• Slow thinking: The thought process begins to slow down and takes longer than usual to understand things or complete activities.
• Disorientation and confusion: They easily lose track of time or a sequence of events.

Physical Symptoms

Other than cognitive impairment, vascular dementia presents a host of physical symptoms mainly because strokes or damage to blood vessels hitting parts of the brain that control movement and coordination occur:

• Weakness or numbness: There can be weakness or numbness in one side of the body, which in most cases is the outcome of past strokes.
• Difficulty with walking and coordination: There may be an inability to walk on one's own or have balance, causing the patient to fall.
• Involuntary incontinence: It can occur in some cases, especially in advanced stages, due to damage in brain regions controlling these functions.

Treatment of Vascular Dementia

While there is no cure for vascular dementia, treatments can help manage symptoms and address underlying conditions like high blood pressure, diabetes, or strokes that contribute to the disease. Although these treatments may improve the quality of life, they cannot reverse or significantly slow the progression of the condition in most cases.

Drug Therapy for Vascular Dementia

Medical treatment for vascular dementia focuses predominantly on managing the conditions leading to blood vessel damage. This includes managing high blood pressure, diabetes, and heart disease to reduce further risk. Management may involve:

Managing underlying diseases: Controlling these conditions reduces the risk of further blood vessel damage. Examples of such medications are antihypertensives, statins, and diabetes medications.

Some medications improve blood flow to the brain, potentially reducing the risk of subsequent strokes or blockages. These can include antiplatelet drugs like aspirin or anticoagulants such as blood thinners to prevent clots.

Lifestyle Changes

Lifestyle changes form an integral part of the management of vascular dementia and the prevention of further decline in cognitive functions. These include the following:

• Healthy diet and lifestyle: A heart-healthy diet, rich in fruits, vegetables, whole grains, and lean proteins, can drastically reduce a person's risk of vascular disease. Reduction in salt, sugar, and unhealthy fats use will also help maintain healthy blood pressure and cholesterol levels.
• Engage in regular physical activity: Another facet of physical activity is the improved blood flow into the brain, which may reduce the risk for strokes and other vascular problems. Even light exercise is good for someone like a brisk walk.
• Relieving stress: Stress can significantly elevate blood pressure, putting your overall health at risk. Incorporating relaxation techniques like meditation, deep breathing exercises, or yoga can help manage stress effectively. These practices not only promote relaxation but also have a positive impact on blood pressure control.

Natural Remedies

Some patients may opt for herbal drugs or supplements for relief from symptoms produced by this condition. Though the scientific world has sparse evidence on such remedies, some patients claim that these help regulate symptoms. To be candid, one should seek their health care provider before trying any new supplements or herbs as a remedy for the condition, and to find out that they are safe and not interfering with the medication one is currently taking.

Conclusion

Vascular dementia is a serious and life-changing condition that dramatically affects the possibilities of cognitive and physical abilities. Vascular dementia primarily results from damage to blood vessels in the brain, often due to stroke, blockages, high blood pressure, or diabetes. Early diagnosis and treatment can help manage symptoms, potentially slow disease progression, and improve quality of life. If you or a family member experience some symptoms of vascular dementia, seek medical help fast.

By -Dr Aaksha Shukla | November 09, 2024 | 9 Min Read