Understanding the difference between everyday forgetfulness and the warning signs of dementia

Have you ever walked into a room and forgotten why you went there? Or spent several minutes searching for your keys, only to discover they were in your pocket all along?

These experiences are familiar to many of us. They can happen when we are tired, distracted, stressed or simply have too much on our minds.

But a thought-provoking statement in a video I recently watched offered a different perspective on dementia:

“Dementia is not forgetting your keys. It is forgetting what your keys do.”

The statement captures an important distinction between ordinary forgetfulness and the deeper cognitive changes that can occur in people living with dementia.

Forgetting Something Is Not the Same as Losing Its Meaning

Misplacing your keys does not necessarily indicate a problem with your memory. You may forget where you placed them, but you still understand what they are, recognise their purpose and know how to use them.

Dementia can affect these abilities in more profound ways. Depending on the type and stage of the condition, a person may struggle to recognise familiar objects, understand their purpose, follow familiar routines or perform everyday tasks they previously managed with ease.

Imagine someone holding a set of keys but no longer understanding that they are used to unlock a door. This could indicate a difficulty with recognition or understanding that deserves medical attention, particularly if it is a new or recurring problem.

However, it is important to remember that this example is an illustration, not a diagnostic test. Dementia affects people differently, and not everyone experiences this particular symptom.

What Exactly Is Dementia?

Dementia is an umbrella term for a group of symptoms associated with a decline in cognitive abilities severe enough to interfere with everyday life.

It is not a normal or inevitable part of ageing. Alzheimer’s disease is the most common cause, although other conditions, including vascular dementia and Lewy body dementia, can also affect memory, thinking, behaviour and the ability to function independently.

Depending on the person, symptoms may include:

• Memory loss: Repeatedly forgetting recent conversations or events.
• Difficulty with familiar tasks: Struggling to complete activities that were once routine.
• Language difficulties: Having trouble finding words or following conversations.
• Disorientation: Becoming confused about the date, surroundings or familiar routes.
• Poor judgement: Experiencing unusual difficulties with decisions, planning or managing money.
• Changes in behaviour or personality: Developing changes in mood, motivation or social behaviour that are unusual for the person.

These symptoms do not necessarily mean someone has dementia. Other medical conditions can produce similar difficulties, which is why professional assessment matters.

When Should Forgetfulness Become a Concern?

There is a difference between occasionally forgetting something and experiencing a persistent decline in your ability to remember, understand or function.

For example, forgetting where you parked your car but eventually finding it is different from repeatedly becoming lost in a familiar place.

Likewise, occasionally forgetting a person’s name is different from consistently struggling to recognise familiar people or follow conversations.

The important questions are whether these difficulties are new, whether they are becoming more frequent, and whether they interfere with daily life.

If you or someone close to you experiences persistent changes in memory, thinking, behaviour or the ability to perform familiar activities, arrange an assessment with a healthcare professional.

Sudden confusion that develops over hours or days requires urgent medical attention, as it may be caused by an acute illness or another treatable condition rather than dementia.

Dementia and the Importance of Early Recognition

Recognising possible symptoms early can help people access an appropriate diagnosis, treatment for contributing conditions, support and practical planning.

Although many forms of dementia cannot currently be cured, some symptoms can be managed, and certain causes of cognitive impairment are treatable. Early assessment can also help families understand what is happening and make informed decisions about care and support.

Maintaining physical activity, managing blood pressure and diabetes, avoiding smoking, addressing hearing loss and staying socially engaged may help support brain health and reduce the risk of cognitive decline. These measures cannot guarantee that a person will avoid dementia, but they are important for overall health.

Let Us Replace Fear With Understanding

Perhaps the most important lesson from the statement about keys is not that we should become suspicious of every forgotten name or misplaced object. It is that we should pay attention to meaningful changes in how we and the people we love think, understand and manage everyday life.

We should also approach people living with dementia with patience, dignity and compassion. Their difficulties are not deliberate, and they deserve understanding rather than ridicule or blame.

Forgetfulness can be frustrating, but it does not automatically mean dementia. At the same time, persistent changes in recognition, reasoning or familiar abilities should not be dismissed as simply getting older.

The real lesson is this: dementia can affect more than what we remember. It can affect how we understand, interpret and interact with the world around us.

And when we understand the difference, we are better equipped to recognise when someone may need help.

Disclaimer: This article is for general awareness and educational purposes. It is not a substitute for professional medical advice or a diagnosis.