What’s the difference? is a new editorial product that explains the similarities and differences between commonly confused health and medical terms, and why they matter.

Changes in thinking and memory as we age can occur for a variety of reasons. These changes are not always cause for concern. But when they begin to disrupt daily life, it could indicate the first signs of dementia.

Another term that can crop up when we’re talking about dementia is Alzheimer’s disease, or Alzheimer’s for short.

So what’s the difference?

What is dementia?

Dementia is an umbrella term used to describe a range of syndromes that result in changes in memory, thinking and/or behaviour due to degeneration in the brain.

To meet the criteria for dementia these changes must be sufficiently pronounced to interfere with usual activities and are present in at least two different aspects of thinking or memory.

For example, someone might have trouble remembering to pay bills and become lost in previously familiar areas.

It’s less-well known that dementia can also occur in children. This is due to progressive brain damage associated with more than 100 rare genetic disorders. This can result in similar cognitive changes as we see in adults.

So what’s Alzheimer’s then?

Alzheimer’s is the most common type of dementia, accounting for about 60-80% of cases.

So it’s not surprising many people use the terms dementia and Alzheimer’s interchangeably.

Changes in memory are the most common sign of Alzheimer’s and it’s what the public most often associates with it. For instance, someone with Alzheimer’s may have trouble recalling recent events or keeping track of what day or month it is.

We still don’t know exactly what causes Alzheimer’s. However, we do know it is associated with a build-up in the brain of two types of protein called amyloid-β and tau.

While we all have some amyloid-β, when too much builds up in the brain it clumps together, forming plaques in the spaces between cells. These plaques cause damage (inflammation) to surrounding brain cells and leads to disruption in tau. Tau forms part of the structure of brain cells but in Alzheimer’s tau proteins become “tangled”. This is toxic to the cells, causing them to die. A feedback loop is then thought to occur, triggering production of more amyloid-β and more abnormal tau, perpetuating damage to brain cells.

Alzheimer’s can also occur with other forms of dementia, such as vascular dementia. This combination is the most common example of a mixed dementia.

Vascular dementia

The second most common type of dementia is vascular dementia. This results from disrupted blood flow to the brain.

Because the changes in blood flow can occur throughout the brain, signs of vascular dementia can be more varied than the memory changes typically seen in Alzheimer’s.

For example, vascular dementia may present as general confusion, slowed thinking, or difficulty organising thoughts and actions.

Your risk of vascular dementia is greater if you have heart disease or high blood pressure.

Frontotemporal dementia

Some people may not realise that dementia can also affect behaviour and/or language. We see this in different forms of frontotemporal dementia.

The behavioural variant of frontotemporal dementia is the second most common form (after Alzheimer’s disease) of younger onset dementia (dementia in people under 65).

People living with this may have difficulties in interpreting and appropriately responding to social situations. For example, they may make uncharacteristically rude or offensive comments or invade people’s personal space.

Semantic dementia is also a type of frontotemporal dementia and results in difficulty with understanding the meaning of words and naming everyday objects.

Dementia with Lewy bodies

Dementia with Lewy bodies results from dysregulation of a different type of protein known as α-synuclein. We often see this in people with Parkinson’s disease.

So people with this type of dementia may have altered movement, such as a stooped posture, shuffling walk, and changes in handwriting. Other symptoms include changes in alertness, visual hallucinations and significant disruption to sleep.

Do I have dementia and if so, which type?

If you or someone close to you is concerned, the first thing to do is to speak to your GP. They will likely ask you some questions about your medical history and what changes you have noticed.

Sometimes it might not be clear if you have dementia when you first speak to your doctor. They may suggest you watch for changes or they may refer you to a specialist for further tests.

There is no single test to clearly show if you have dementia, or the type of dementia. A diagnosis comes after multiple tests, including brain scans, tests of memory and thinking, and consideration of how these changes impact your daily life.

Not knowing what is happening can be a challenging time so it is important to speak to someone about how you are feeling or to reach out to support services.

Dementia is diverse

As well as the different forms of dementia, everyone experiences dementia in different ways. For example, the speed dementia progresses varies a lot from person to person. Some people will continue to live well with dementia for some time while others may decline more quickly.

There is still significant stigma surrounding dementia. So by learning more about the various types of dementia and understanding differences in how dementia progresses we can all do our part to create a more dementia-friendly community.

The National Dementia Helpline (1800 100 500) provides information and support for people living with dementia and their carers. To learn more about dementia, you can take this free online course.

Nikki-Anne Wilson, Postdoctoral Research Fellow, Neuroscience Research Australia (NeuRA), UNSW Sydney

This article is republished from The Conversation under a Creative Commons license. Read the original article.

In the aftermath of the tragic Bondi knife attack, Joel Cauchi’s parents have spoken about their son’s long history of mental illness, having been diagnosed with schizophrenia at age 17. They said they were “devastated and horrified” by their son’s actions. “To you he’s a monster,” said his father. “But to me he was a very sick boy.”

Globally, one out of every eight people report a mental illness. In Australia, one in five people experience a mental illness in their lifetime.

Mental illness and distress affects not only the person living with the condition, but family members and communities. As the prevalence of mental health problems grows, the flow-on effect to family members, including caregivers, and the impact on families as a unit, is also rising.

While every family is different, the words of the Cauchis draw attention to how families can experience distress, stress, fear, powerlessness, and still love, despite the challenges and trauma. How can they help a loved one? And who can they turn to for support?

The role of caregivers

Informal caregivers help others within the context of an existing relationship, such as a family member. The care they provide goes beyond the usual expectations or demands of such relationships.

Around 2.7 million Australians provide informal care. For almost a third of these the person’s primary medical diagnosis is psychological or psychiatric.

It has long been acknowledged that those supporting a family member with ongoing mental illness need support themselves.

In the 1980s, interest grew in caregiving dynamics within families of people grappling with mental health issues. Subsequent research recognised chronic health conditions not only affect the quality of life and wellbeing of the people experiencing them, but also impose burdens that reverberate within relationships, caregiving roles, and family dynamics over time.

Past studies have shown families of those diagnosed with chronic mental illness are increasingly forced to manage their own depression, experience elevated levels of emotional stress, negative states of mind and decreased overall mental health.

Conditions such as depression, anxiety disorders, bipolar disorder, and schizophrenia can severely impact daily functioning, relationships, and overall quality of life. Living with mental illness is often accompanied by a myriad of challenges. From stigma and discrimination to difficulty accessing adequate health care and support services. Patients and their families navigate a complex and often isolating journey.

The family is a system

The concept of family health acknowledges the physical and psychological wellbeing of a person is significantly affected by the family.

Amid these challenges, family support emerges as a beacon of hope. Research consistently demonstrates strong familial relationships and support systems play a pivotal role in mitigating the adverse effects of mental illness. Families provide emotional support, practical assistance, and a sense of belonging that are vital for people struggling with mental illness.

My recent research highlights the profound impact of mental illness on family dynamics, emphasising the resilience and endurance shown by participants. Families struggling with mental illness often experience heightened emotional fluctuations, with extreme highs and lows. The enduring nature of family caregiving entails both stress and adaptation over an extended period. Stress associated with caregiving and the demands on personal resources and coping mechanisms builds and builds.

Yet families I’ve interviewed find ways to live “a good life”. They prepare for the peaks and troughs, and show endurance and persistence. They make space for mental illness in their daily lives, describing how it spurs adaptation, acceptance and inner strength within the family unit.

When treating a person with mental illness, health practitioners need to consider the entire family’s needs and engage with family members. By fostering open and early dialogue and providing comprehensive support, health-care professionals can empower families to navigate the complexities of mental illness while fostering resilience and hope for the future. Family members express stories of an inner struggle, isolation and exhaustion.

Shifting the focus

There is a pressing need for a shift in research priorities, from illness-centered perspectives to a strengths-based focus when considering families “managing” mental illness.

There is transformative potential in harnessing strengths to respond to challenges posed by mental illnesses, while also supporting family members.

For people facing mental health challenges, having loved ones who listen without judgement and offer empathy can alleviate feelings of despair. Beyond emotional support, families often serve as crucial caregivers, assisting with daily tasks, medication management and navigating the health-care system.

As the Cauchi family so painfully articulated, providing support for a family member with mental illness is intensely challenging. Research shows caregiver burnout, financial strain and strained relationships are common.

Health-care professionals should prioritise support for family members at an early stage. In Australia, there are various support options available for families living with mental illness. Carer Gateway provides information, support and access to services. Headspace offers mental health services and supports to young people and their families.

Beyond these national services, GPs, nurses, nurse practitioners and local community health centres are key to early conversations. Mental health clinics and hospitals often target family involvement in treatment plans.

While Australia has made strides in recognising the importance of family support, challenges persist. Access to services can vary based on geographic location and demand, leaving some families under-served or facing long wait times. And the level of funding and resources allocated to family-oriented mental health support often does not align with the demand or complexity of need.

In the realm of mental illness, family support serves as a lifeline for people navigating the complexities of their conditions.

If this article has raised issues for you, or if you’re concerned about someone you know, call Lifeline on 13 11 14.

Amanda Cole, Lead, Mental Health, Edith Cowan University

This article is republished from The Conversation under a Creative Commons license. Read the original article.