What is Dementia?
Key points
- Dementia is a brain condition, that generally affects your mood, memory, thinking and behaviour.
- Dementia can happen to anybody, but more commonly after the age of 65.
- Currently, there is no cure for dementia, but there are many treatments and support available.
About Dementia
Dementia is an umbrella term used to describe a group of cognitive disorders that result in a decline in brain function. It is not a specific disease but rather a collection of symptoms caused by various underlying conditions. The most common form of dementia is Alzheimer’s disease, but other types include vascular dementia, Lewy body dementia, and frontotemporal dementia.
Dementia primarily affects older adults, although it is not a normal part of ageing. It can significantly impact memory, reasoning, communication, and the ability to complete everyday tasks.
Causes of Dementia
Dementia is caused by damage to brain cells, which affects their ability to communicate with each other. While the exact cause for each condition is not known, there are many contributing factors:
- Neurodegenerative diseases: Conditions like Alzheimer’s disease, Parkinson’s disease, and Huntington’s disease cause progressive damage to brain cells.
- Vascular issues: Reduced or blocked blood flow to the brain, often due to strokes or heart disease, can lead to vascular Dementia.
- Infections and immune disorders: Conditions such as HIV, meningitis, and autoimmune diseases can lead to Dementia-like symptoms.
- Head injuries: Traumatic brain injuries, especially repeated ones, can increase the risk of dementia.
- Nutritional deficiencies: A lack of essential nutrients like vitamin B12 can cause memory loss and cognitive decline.
- Toxic exposure: Prolonged exposure to heavy metals, alcohol abuse, and certain medications can damage brain cells and contribute to dementia.

Signs and Symptoms
The symptoms of dementia vary depending on the type and stage of the condition. Some common signs include:
- Memory loss that disrupts daily life
- Difficulty communicating or finding words
- Trouble with problem-solving or decision-making
- Confusion about time and place
- Mood changes, including depression, anxiety, or agitation
- Difficulty performing familiar tasks
- Withdrawal from social activities
As Dementia progresses, symptoms become more severe, making independent living increasingly difficult.
Diagnosing Dementia
Diagnosing Dementia involves a combination of medical history assessments, cognitive tests, and physical examinations. Common diagnostic steps include:
- Medical history review: Doctors assess symptoms, family history, and any underlying health conditions.
- Cognitive and neurological tests: These tests evaluate memory, problem-solving skills, and other brain functions.
- Brain imaging: MRI, CT scans, or PET scans help detect brain abnormalities or signs of neurodegeneration.
- Blood tests: To rule out other Conditions such as vitamin deficiencies or thyroid disorders.
Early diagnosis allows for better management and planning, providing individuals and their families with the necessary support and care.
Progression of Dementia
Dementia is a progressive condition that worsens over time. While progression varies depending on the type of Dementia, it typically follows three main stages:
- Early-stage dementia: Symptoms are mild and may include forge]ulness, difficulty finding words, and slight changes in mood or behaviour.
- Middle-stage dementia: Symptoms become more noticeable, including increased confusion, difficulty recognising familiar faces, and needing assistance with daily activities.
- Late-stage dementia: Individuals may lose the ability to communicate, require full-time care, and experience severe physical and cognitive decline.
Treatment and Management of Dementia
There is currently no cure for Dementia, but treatments and lifestyle changes can help manage symptoms and improve quality of life. Commonly available treatments are:
- Medications: Some drugs, such as cholinesterase inhibitors and memantine, can help manage symptoms and slow progression in some cases.
- Cognitive therapies: Memory training, puzzles, and structured rou4nes can help maintain cognitive function.
- Lifestyle changes: A healthy diet, regular physical activity, and social engagement can help slow cognitive decline.
- Supportive care: Occupational therapy, counselling, and support groups provide emotional and practical assistance to individuals and caregivers.
How Living Waters Aged Care can help
Whatever stage you are at with Dementia, we are here to help. Find out about our Dementia services.
We also understand the challenges caregivers have in taking care of their loved ones. Find out about our respite and social services.