Most families spot something months or years before anyone says the word “dementia”. A repeated question. A missed appointment. A parent who gets flustered by the washing machine they’ve used for twenty years.
This guide explains what separates early dementia from ordinary ageing, the signs worth acting on, and why an early conversation with the GP matters more than most people realise — including the fact that a meaningful number of people with these symptoms turn out to have something else entirely, and treatable.
Dementia vs normal ageing
Everyone’s memory changes with age. Names take longer to surface. You walk into a room and forget why. That’s normal, and it isn’t dementia.
The difference is usually one of kind rather than degree:
| Normal ageing | Possible dementia |
|---|---|
| Forgetting a name, remembering it later | Forgetting the name of a close family member |
| Misplacing keys, retracing steps to find them | Putting keys somewhere illogical — the fridge — with no memory of doing it |
| Occasionally forgetting which day it is, then working it out | Losing track of the season or the year |
| Needing help with a new device | Struggling with a familiar appliance used for years |
| Pausing to find a word | Calling a watch a “hand clock”; losing the thread mid-sentence |
| Occasionally making a poor decision | A pattern of poor judgement — giving money away, dressing for the wrong weather |
| Tiring of obligations sometimes | Withdrawing from work, hobbies and friends altogether |
The most useful question isn’t “have they forgotten things?” It’s “has their ability to function changed?” Memory slips that don’t affect daily life are generally ageing. Slips that mean bills go unpaid, meals get skipped or the cooker is left on are worth a GP appointment.
Common early signs to look for
Memory loss that disrupts daily life
Repeating the same question within one conversation. Relying heavily on notes and reminders for things once managed easily. Forgetting recent events while remembering 1974 vividly — a hallmark pattern in Alzheimer’s, where short-term memory is affected first.
Difficulty with familiar tasks
Struggling to follow a recipe they’ve cooked for decades. Trouble with the sequence of making tea. Difficulty managing money, or paying the same bill twice.
Confusion with time or place
Losing track of dates. Getting disoriented on a familiar route — a known warning sign for driving. Forgetting how they arrived somewhere.
Problems with words
Pausing frequently mid-sentence. Substituting related or invented words. Withdrawing from group conversation because it’s become too fast to follow. (Do check hearing first — untreated hearing loss produces a strikingly similar picture and is itself a significant dementia risk factor.)
Misplacing things in unusual places
Not just losing keys, but finding them in odd locations with no recollection. Some people become convinced things have been stolen — distressing for everyone, and a symptom rather than an accusation.
Changes in mood or personality
New anxiety, suspicion, irritability or apathy. Becoming easily upset outside familiar surroundings. A gentle person becoming sharp. Personality change sometimes precedes memory symptoms — particularly in frontotemporal dementia, which often appears earlier in life.
Withdrawal
Dropping the bowls club, the choir, the weekly coffee. Often because keeping up has become effortful and they’d rather not be caught out.
Poor judgement
Unusual financial decisions, susceptibility to doorstep callers or phone scams, neglecting personal hygiene. Financial confusion is frequently one of the earliest visible signals.
Different types of dementia
“Dementia” is an umbrella term, not a single condition. The type matters because the early signs and the care approach differ.
- Alzheimer’s disease — the most common. Typically begins with short-term memory loss and progresses gradually.
- Vascular dementia — caused by reduced blood supply to the brain, often after strokes or small vessel disease. May progress in noticeable steps rather than smoothly, and often affects planning and concentration before memory. See stroke care.
- Dementia with Lewy bodies — features fluctuating alertness, visual hallucinations, disturbed sleep and Parkinson’s-like movement changes. Important: people with Lewy body dementia can react badly to certain antipsychotic medications, which makes accurate diagnosis genuinely consequential.
- Frontotemporal dementia — more common under 65. Personality change, loss of inhibition or language difficulty usually precede memory problems.
- Mixed dementia — more than one type together, which is common in older age.
It might not be dementia — and that matters
Several reversible conditions produce very similar symptoms:
- Urinary tract infections — a notorious cause of sudden confusion in older people, sometimes with no other symptoms
- Vitamin B12 or folate deficiency
- Underactive thyroid
- Depression — can closely mimic dementia, and is treatable
- Medication side effects and interactions, particularly with multiple prescriptions
- Dehydration
- Untreated hearing or sight loss
- Normal pressure hydrocephalus — rare, but treatable, and classically presents as confusion, unsteady walking and incontinence together
This is the strongest argument for seeing a GP rather than waiting and watching. A blood test and a medication review can sometimes resolve the whole picture.
When and how to seek a diagnosis
Why early diagnosis helps
- It rules out reversible causes
- Treatments for some dementias work better started early
- It opens access to NHS memory services, support groups and Admiral Nurses
- It allows the person to set up a Lasting Power of Attorney while they still have capacity — this window closes, and families who miss it face the Court of Protection instead
- It means the person can express their own wishes about future care while they’re able to
- It unlocks benefits, including Attendance Allowance and the Council Tax severe mental impairment disregard
What happens at the GP
Expect a conversation about symptoms and timeline, blood tests to exclude other causes, a medication review, and a short cognitive test. If dementia remains likely, referral follows to a memory assessment service, where more detailed testing and sometimes a brain scan take place.
Practical tip: write down specific examples with dates before the appointment, and go with them if they’ll allow it. People consistently perform better in a ten-minute consultation than they do at home, and a GP working from a single appointment may not see what you see.
How home care helps after a diagnosis
Most people with dementia live at home, and most continue to do so for years. Familiar surroundings genuinely help: the layout of a known house does cognitive work that an unfamiliar one doesn’t.
a CQC-registered agency’s dementia care focuses on consistency — the same small team, the same visit times, the same order of doing things. Practical support includes personal care, medication prompts, meals, companionship, and overnight care where night-time confusion is an issue. As needs increase, live-in care offers a genuine alternative to residential care.
Further reading: creating a safe, familiar home, communication tips that help, managing sundowning, and local dementia support in Worthing and Adur.
Local and national support
- Alzheimer’s Society — Dementia Connect support line and local services
- Dementia UK — Admiral Nurse Dementia Helpline, staffed by specialist dementia nurses
- Memory cafés across Worthing and Adur — listed in our local guide
- Carers Support West Sussex — carer’s assessments and groups
Worried about someone? Start with the GP — a memory assessment referral begins there, and the reversible causes need ruling out first. Our dementia-friendly Worthing guide sets out the local pathway.
Frequently asked questions
What are the first signs of dementia?
Most often short-term memory loss that disrupts daily life, difficulty with familiar tasks, confusion about time or place, word-finding problems, misplacing things in unusual locations, mood or personality changes, and withdrawal from social activities. The key test is whether the person’s ability to function day to day has changed.
Is memory loss always dementia?
No. Urinary infections, vitamin B12 deficiency, thyroid problems, depression, dehydration, hearing loss and medication side effects can all cause similar symptoms, and many are fully reversible. That’s precisely why a GP assessment matters rather than assuming either way.
When should we see a doctor about memory problems?
When memory or thinking changes start affecting daily life — missed bills, missed medication, getting lost on familiar routes, difficulty with tasks previously managed easily. Sooner is better: it rules out reversible causes and preserves the window for Lasting Power of Attorney and the person’s own decisions about their care.
How quickly does dementia progress?
It varies widely by type and person. Alzheimer’s typically progresses gradually over several years; vascular dementia may change in steps after further vascular events. Many people live well at home with support for a long time after diagnosis.
Can someone with dementia stay in their own home?
Very often, yes — with the right support and some practical adjustments. Familiar surroundings and consistent routines help significantly. Our guide to dementia care at home covers safety, routines and when to consider live-in or overnight care.
The Care Panel is an independent publication. We are not a care provider and are not regulated by the Care Quality Commission, because we do not deliver care. Always check a provider’s own CQC registration and inspection report before you commit.
Written and fact-checked by The Care Panel. Last updated September 2026. Sources include the Alzheimer’s Society, Dementia UK, NHS and NICE guidance. This article is general information and not a substitute for medical advice — if you’re concerned about someone’s memory, please contact their GP.