Younger Onset Dementia

Understanding Younger Onset Dementia

Dementia can affect people well before the age of 65

Younger onset dementia means any form of dementia diagnosed in a person under 65. It is sometimes called early onset dementia. It is not one single disease, and it is not simply “normal ageing happening early”. Dementia is caused by diseases or injuries that affect the brain and interfere with everyday life.

How is younger onset dementia different?

The underlying diseases can be the same as those seen later in life, including Alzheimer’s disease, frontotemporal dementia, vascular dementia and Lewy body dementia. Alcohol-related brain injury and some rarer neurological or genetic conditions may also affect younger adults.

The biggest differences are often the person’s stage of life and the way symptoms first appear. A younger person may still be working, raising children, supporting a family, paying a mortgage or caring for parents. Some forms seen in younger adults are also more likely to begin with changes in behaviour, personality, language, judgement, visual processing or planning rather than obvious memory loss.

Possible signs and symptoms

• Difficulty following conversations or finding the right words
• Repeating questions or forgetting recently learned information
• Trouble planning, organising, concentrating or making decisions
• Struggling with familiar tasks at work or home
• Getting lost in familiar places or becoming confused about time
• Changes in personality, judgement, empathy or social behaviour
• Increased impulsiveness, irritability, anxiety, apathy or withdrawal
• Difficulty coping in noisy, busy or visually complex environments
• Problems recognising objects, faces, distances or spatial relationships
• Changes in movement, balance, coordination or sleep

These symptoms can also be caused by other conditions, including depression, medication effects, vitamin deficiencies, thyroid disorders, sleep apnoea, infection, head injury, stroke, alcohol use and hearing or vision problems. This is why assessment is important.

Normal ageing or something more?

Why early assessment matters

• Some causes of cognitive change are treatable or reversible
• The correct diagnosis helps match treatment to the underlying condition
• Symptoms such as poor sleep, pain, anxiety, depression, hearing loss and medication side effects can be addressed
• Families can access support, workplace assistance and future-planning advice sooner
• The person can remain involved in decisions about care, finances, driving and lifestyle

A good first step is to book a longer appointment with a GP and take a trusted family member or friend. Bring examples of changes, when they began, relevant medical history, a medication and supplement list, and any family history of dementia or neurological illness.

Can treatment help?

There is currently no cure for most causes of dementia. However, this does not mean that nothing can be done. Treatment and support can help some people maintain function, manage symptoms, reduce avoidable health risks and live a safer, more connected and meaningful life.

Medicines

Depending on the diagnosis, a specialist may recommend medicines intended to support memory and thinking, manage mood or behaviour, treat sleep problems, or control conditions that can worsen brain health. Some newer medicines may slow progression for carefully selected people with early Alzheimer’s disease, but they are not suitable for every person or every type of dementia and require specialist assessment and monitoring.

Therapies and practical supports

• Occupational therapy to support routines, safety and independence
• Speech pathology for language, communication and swallowing
• Physiotherapy and exercise physiology for strength, balance and mobility
• Cognitive rehabilitation and strategies for memory, planning and daily tasks
• Psychology, counselling and family support
• Hearing, vision, sleep and pain assessment
• Regular physical activity, nutritious food, social connection and meaningful activity
• Reducing alcohol, stopping smoking and managing blood pressure, cholesterol and diabetes

Supplements and complementary approaches

Supplements may be useful when a deficiency or specific medical need has been identified—for example vitamin B12, folate, vitamin D or thiamine in appropriate circumstances. Evidence for many products marketed for memory or dementia is limited or mixed. Some supplements can interact with medicines, affect bleeding risk or be unsafe with particular health conditions.

Complementary and emerging approaches should be discussed honestly with the person’s GP or specialist. Ask what evidence exists for the person’s specific diagnosis, what risks and costs are involved, how progress will be measured, and whether the approach could interfere with established treatment.

Supporting a better life after diagnosis

A diagnosis changes life, but it does not erase the person. Good support focuses on ability, dignity, relationships and participation—not only decline.

• Keep the person involved in decisions
• Build routines around their strengths
• Make communication clear and unhurried
• Reduce unnecessary noise, clutter and pressure
• Support movement, sleep, nutrition and social connection
• Plan early for work, finances, driving, legal matters and future care
• Seek support for partners, children and other family members

Educational information only: Nurture Better Futures does not diagnose or treat dementia. Seek personalised advice from a qualified health professional. For sudden confusion, weakness, facial droop, severe headache or difficulty speaking, call 000.