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Understanding Dementia: Types, Symptoms, and Support Strategies

Dementia is a broad category of brain diseases that cause a long-term and often gradual decrease in the ability to think and remember. Such a decline is severe enough to affect a person's daily functioning. In this blog, we'll explore the types of dementia, symptoms, causes, diagnosis, and treatment options, as well as ways to support those affected and their caregivers.

Understanding Dementia

Dementia is not a single disease; it’s an overall term — like heart disease — that covers a wide range of specific medical conditions, including Alzheimer’s disease. Disorders grouped under the general term "dementia" are caused by abnormal brain changes. These changes trigger a decline in thinking skills, also known as cognitive abilities, severe enough to impair daily life and independent function.

Types of Dementia

  • Alzheimer’s Disease: The most common type of dementia, accounting for 60-80% of cases.

  • Vascular Dementia: Caused by microscopic bleeding and blood vessel blockage in the brain. It's the second most common cause of dementia.

  • Lewy Body Dementia: Associated with abnormal deposits of a protein called alpha-synuclein in the brain.

  • Frontotemporal Dementia: Involves the frontal and temporal lobes of the brain and includes conditions such as behavioral-variant FTD (bv FTD), primary progressive aphasia, Pick’s disease, corticobasal degeneration, and progressive supranuclear palsy.


Dementia symptoms vary depending on the cause, but common signs include:

  • Memory loss

  • Difficulty communicating or finding words

  • Difficulty with visual and spatial abilities, such as getting lost while driving

  • Difficulty reasoning or problem-solving

  • Difficulty handling complex tasks

  • Difficulty with planning and organizing

  • Difficulty with coordination and motor functions

  • Confusion and disorientation

Causes and Risk Factors

The causes of dementia can vary, depending on the types of brain changes that may be happening. Common causes include:

  • Genetic factors: Some types of dementia, including Alzheimer's disease, have a genetic component.

  • Age: The risk of developing dementia increases as one gets older.

  • Lifestyle and heart health: Smoking, poor diet, lack of exercise, and other lifestyle factors that affect heart health can increase the risk of dementia.

  • Head injuries: Severe head trauma can lead to future risk of dementia.


Diagnosing dementia involves a thorough medical history, physical examination, laboratory tests, and the characteristic changes in thinking, day-to-day function, and behavior associated with each type. Brain scans, while not diagnosing dementia directly, can rule out other causes of dementia-like symptoms, such as tumors or stroke.

Treatment and Management

While there is no cure for most types of dementia, there are ways to manage the symptoms. Treatment might involve medications to reduce symptoms or slow down the progression of the disease. Non-medical interventions like cognitive stimulation therapy and lifestyle changes can also make a significant difference in quality of life.

Supporting Those Affected

Supporting someone with dementia involves both understanding the condition and providing practical and emotional support. Caregivers should focus on:

  • Providing a safe and supportive environment

  • Helping with daily activities as needed

  • Encouraging social interaction and engagement

  • Managing changes in behavior with patience and understanding

  • Seeking professional help when needed

Dementia is a challenging condition, not only for the individuals diagnosed but also for their families and caregivers. By understanding the types, symptoms, causes, and treatments, we can better support those affected. Remember, you are not alone—support groups, health professionals, and community resources can offer help and guidance on this journey.

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