Understanding dementia

Dementia is not a single disease but a group of symptoms, caused by different conditions, that affect memory, thinking, language and the ability to carry out everyday tasks. Alzheimer's disease is the most common cause, accounting for an estimated 60 to 70% of cases (World Health Organization). Worldwide, more than 57 million people live with dementia, with nearly 10 million new cases each year, and as populations age those numbers are expected to climb.

One thing matters above all: dementia is not a normal part of growing older. Forgetting a name and remembering it later is ordinary. Forgetting recently learned information, the names of close family, or how to do familiar things is not, and is worth paying attention to.

Early signs to watch for

Dementia tends to come on gradually, and it looks different from person to person. Common early signs include:

• Memory loss that disrupts daily life, especially forgetting recently learned information
• Difficulty planning, solving problems, or following familiar steps like a recipe
• Losing track of dates and seasons, or of where you are
• Trouble finding the right words, or following and joining a conversation
• Misplacing things and being unable to retrace your steps to find them
• Changes in mood or personality: withdrawal, confusion, suspicion or anxiety

We all have an off day. The difference with dementia is that these changes are persistent, worsen over time, and begin to interfere with everyday life.

Why an early assessment helps

It is natural to put off seeking help, often out of fear of what it might mean. But an early, accurate diagnosis is one of the most useful steps a family can take. Some causes of memory problems, such as thyroid conditions, infections, depression or vitamin deficiencies, are treatable and reversible. Where it is dementia, knowing early opens the door to treatments that can ease symptoms, to planning while the person can still take part in decisions, and to support for the people caring for them.

Supporting someone living with dementia

Care is as much about connection as it is about clinical treatment. A few things help:

• Keep routines steady, and the environment calm and familiar
• Speak in short, clear sentences, and allow time for a reply
• Meet the emotion behind the words rather than correcting every fact
• Stay connected through music, photographs and shared activities
• Look after the carer too: support and respite are not optional extras

If you have noticed these changes in yourself or someone you love, reach out to a qualified professional. A psychiatrist can assess what is happening, rule out treatable causes, and work with you and your family on a plan, whatever the diagnosis turns out to be.