Fiducia TogetherYoung onset dementia
Also called Early onset dementia, Working age dementia
Dementia diagnosed before 65. Around 70,800 people in the UK, and services are built for somebody thirty years older.
Important: This page is general information, not medical advice, and it is not a diagnosis. If you are worried about your health or someone else's, speak to a GP, pharmacist, or call 111. In an emergency, call 999.
What it is
Around 70,800 people in the UK have young onset dementia, meaning symptoms began before the age of 65.
It is not simply dementia arriving early. The causes differ: frontotemporal dementia is far commoner in this group, as are alcohol-related brain damage, Huntington's disease and dementia after brain injury. Rarer genetic forms also cluster here.
The presentation differs too. Memory is often not the first thing affected. Behaviour, personality, language and judgement frequently come first, which is exactly why diagnosis takes so much longer in this group, commonly four years or more.
Signs you might notice
Changes in personality and behaviour: loss of empathy, disinhibition, apathy, rigid or repetitive routines.
Difficulty with language: word-finding, understanding, or speech becoming effortful.
Problems with planning, judgement and money, at work before anywhere else.
Memory relatively preserved early on, which is why it gets diagnosed as depression, stress, a midlife crisis, or a marriage in trouble.
How it can affect day-to-day life
The mismatch with services is the defining problem. Day services designed for people in their eighties are not appropriate for a 54-year-old, and being offered one is experienced as an insult.
The financial impact is severe in a way it is not at 80. People lose careers mid-mortgage, often after a period of poor performance that was the illness. Children may still be at school.
Behavioural variant frontotemporal dementia frequently damages relationships badly before anybody knows why, and partners carry guilt about how they responded to symptoms nobody had named.
Supporting someone well
Push for a specialist young onset service. They exist, they are unevenly distributed, and asking is often what gets a referral.
Deal with employment early: occupational health, ill-health retirement, and pension and insurance claims are far easier to secure with a diagnosis and a supportive employer than after a dismissal.
Get benefits advice, and get lasting power of attorney in place while capacity is clear. Read mental capacity.
Talk to the children honestly and at their level. Silence is worse than the truth, and specialist support exists for them.
Find peer support with people of a similar age. Generic dementia groups often do not fit and people stop attending.
Fiducia Guardian holds the whole picture, health, medicines, consents, documents and the care team, at a stage of life where the person still wants to hold their own affairs and needs help doing it.
Where to get help
Ask for referral to a neurologist or a young onset dementia service rather than a general memory clinic.
Young Dementia Network and Dementia UK both provide specialist advice, and Admiral Nurses support families directly.
Ask about genetic counselling where there is a family history, particularly with frontotemporal dementia.
Tools we make that might help
These are our own products. We have put them here because they do something specific for this condition, not because every page needs a list.
Fiducia Guardian
Health, medicines, consents and documents in one record, at a stage of life where the person still holds their own affairs.
Last reviewed 2026-08-28 by Fiducia Together · Next review due 2027-08-28
Important: This page is general information, not medical advice, and it is not a diagnosis. If you are worried about your health or someone else's, speak to a GP, pharmacist, or call 111. In an emergency, call 999.