Signs of Dementia: What Families Should Know

It's normal to forget where you put your keys, or blank on someone's name once in a while. But when memory loss becomes frequent, keeps getting worse, and starts affecting daily life, it could be a sign of dementia — not just normal ageing. For a lot of families, the hardest part isn't the diagnosis itself. It's figuring out when a parent's forgetfulness has gone from "normal" to something that needs a doctor's attention.

As a psychiatrist who works with older adults, I want to help families spot the early signs of dementia, understand what a proper check-up looks like, and know when it's time to get help.

What Is Dementia?

Dementia isn't one specific disease — it's a general term for a decline in memory, thinking, and everyday mental abilities that's serious enough to affect daily life. Alzheimer's disease is the most common cause, but there are other types too, like vascular dementia. Dementia usually gets worse over time, though how fast it progresses is different for everyone.

Normal Ageing vs. Dementia: What's the Difference?

This is where most families get confused. Here's a simple way to tell them apart:

• Normal ageing: Sometimes forgetting a name or appointment, but remembering it later; taking a bit longer to find the right word; occasionally making a small mistake with money
• Possible dementia: Forgetting things they just learned and not remembering them later; asking the same question over and over; getting lost in places they know well; struggling with money or medication they used to manage just fine

Early Signs of Dementia to Watch For

• Memory loss that affects daily life — forgetting important dates, asking the same thing repeatedly, relying more and more on notes or family for things they used to handle alone
• Trouble with familiar tasks — struggling with something they've done for years, like a favourite recipe or driving somewhere familiar
• Getting confused about time or place — losing track of dates, or not knowing how they got somewhere
• Trouble finding words — struggling to follow or join a conversation, or repeating themselves a lot
• Poor decisions — unusual choices around money, hygiene, or safety
• Pulling away — losing interest in hobbies or social activities they used to enjoy
• Mood or personality changes — more confusion, suspicion, anxiety, or irritability than usual

How Dementia Is Diagnosed

Diagnosing dementia takes more than a quick chat or online quiz. A proper evaluation usually includes:

• A detailed conversation with both the person and a close family member, since the person themselves may not notice all the changes
• Memory and thinking tests — structured tests that check memory, language, and problem-solving
• Ruling out reversible causes — blood tests and sometimes brain scans, to check for treatable causes
• Checking daily function — understanding how symptoms affect things like cooking, managing money, or driving

Why Catching It Early Matters

There's currently no cure for dementia, but catching it early still makes a real difference. It means treatable causes can be dealt with, the family has time to plan for care and important decisions while the person can still take part, and there are treatments that can help slow things down and manage symptoms like anxiety or agitation.

When Should You See a Doctor?

If you've noticed memory or thinking changes in a parent or loved one that are affecting daily life, getting worse over time, or that other family members have noticed too — it's worth booking a proper assessment. This isn't about labelling normal ageing. It's about catching treatable problems early and getting the right support in place.