What Is Dementia?

Dementia is a condition in which cognitive abilities gradually decline enough to interfere with daily life and independence. It is more common among older adults, but it is not considered a normal or inevitable part of ageing.

Cognitive function can be divided into six main areas:

๐ Memory

๐ Attention and concentration

๐ Language

๐ Visual and spatial awareness

๐ Planning, reasoning, and problem-solving

๐ Social understanding and behaviour

Impairment in one or more of these areas may begin to affect everyday activities, such as managing finances, using household appliances, taking medication, travelling independently, or communicating with others.

What Causes Dementia?

Dementia is a broad term rather than a single disease. It can result from several different medical conditions.

Some causes may be treatable or partially reversible when detected early, including:

๐ Abnormal thyroid function

๐ Vitamin B12 deficiency

๐ Depression

๐ Normal-pressure hydrocephalus, or excess fluid in the brain’s ventricles

๐ Brain tumours

๐ Certain infections, such as syphilis

๐ Bleeding in or around the brain

๐ Side effects from certain medicines

Other causes involve progressive damage to brain cells and currently cannot be completely cured.

Alzheimer’s Disease

Alzheimer’s disease is the most common cause of dementia. It gradually affects memory, thinking, language, and the ability to carry out daily activities.

Other Types of Dementia

Other conditions that may cause dementia include:

๐ Vascular dementia

๐ Frontotemporal dementia

๐ Dementia with Lewy bodies

๐ Parkinson’s disease dementia

๐ Mixed dementia involving more than one underlying condition

Identifying the cause is important because treatment and disease progression may differ between individuals.

Common Symptoms of Dementia

Symptoms usually develop gradually over months or years. They may initially be subtle and become more noticeable over time.

Common warning signs include:

๐ Forgetting recent events while retaining older memories

๐ Frequently misplacing objects and being unable to retrace one’s steps

๐ Getting lost in familiar places

๐ Repeating the same question or story within a short period

๐ Frequently forgetting important appointments

๐ Having increasing difficulty finding the correct words

๐ Using inappropriate or incorrect words during conversations

๐ Changes in personality, mood, or behaviour

๐ Difficulty performing familiar daily activities

๐ Problems using a telephone, television remote control, or household appliance

๐ Difficulty managing money, medication, or schedules

Not every episode of forgetfulness indicates dementia. Occasional memory lapses may occur because of stress, inadequate sleep, medication, depression, or other health conditions. Medical assessment is recommended when symptoms become more frequent or begin to affect daily life.

How Is Dementia Diagnosed?

When dementia is suspected, the doctor will gather information from both the patient and a family member, caregiver, or someone who knows the patient well.

The assessment may include:

๐ A detailed history of the symptoms and when they began

๐ Review of medical conditions and current medication

๐ Assessment of changes in daily function and behaviour

๐ Physical and neurological examinations

๐ Cognitive screening or detailed neuropsychological testing

Cognitive assessments examine areas such as memory, concentration, language, planning, and visual-spatial ability. The time required varies depending on the type and depth of testing.

Additional Medical Tests

Further investigations may be performed to identify the cause and rule out treatable conditions.

Blood Tests

Blood tests may evaluate:

๐ Thyroid hormone levels

๐ Vitamin B12 and other vitamin levels

๐ Blood sugar

๐ Liver and kidney function

๐ Electrolyte balance

๐ Evidence of infection when clinically appropriate

Brain Imaging

The doctor may recommend brain imaging, such as:

๐ Computed Tomography, or CT scan

๐ Magnetic Resonance Imaging, or MRI

These tests may help identify stroke, bleeding, tumours, fluid accumulation, brain shrinkage, or other structural abnormalities.

Positron Emission Tomography

A Positron Emission Tomography, or PET, scan may be used in selected patients to assess brain activity or identify patterns associated with certain types of dementia.

It is not required for every patient and is normally considered when the diagnosis remains unclear after the initial assessment.

Treatment for Dementia

Treatment depends on the underlying cause.

Treatable Causes

When cognitive decline is caused by a potentially reversible condition, treating that condition may improve brain function.

Examples include:

๐ Correcting vitamin B12 deficiency

๐ Treating thyroid disorders

๐ Managing depression

๐ Adjusting medicines that affect cognition

๐ Treating infections

๐ Managing excess fluid in the brain when appropriate

The degree of recovery depends on the cause, severity, and how quickly treatment begins.

Progressive Dementia

Conditions such as Alzheimer’s disease cannot currently be completely cured. However, treatment may help slow symptom progression, support cognitive function, and improve quality of life.

Medication may be prescribed to:

๐ Support memory and thinking

๐ Manage behavioural or psychological symptoms

๐ Treat sleep problems, anxiety, or depression when appropriate

๐ Control related health conditions

Early diagnosis allows patients and families to begin treatment, plan future care, and maintain independence for as long as possible.

Non-Medication Approaches

Non-medication care is an important part of dementia management.

Helpful activities may include:

๐ Memory exercises

๐ Reading and writing

๐ Simple calculation or problem-solving activities

๐ Puzzles and appropriate games

๐ Music, art, or familiar hobbies

๐ Regular physical activity

๐ Maintaining a consistent daily routine

๐ Social interaction with family and friends

Activities should be adjusted to the person’s abilities and should not cause excessive frustration or stress.

Managing Behavioural and Emotional Symptoms

Some people with dementia may develop behavioural or psychological symptoms, such as:

๐ Agitation or shouting

๐ Irritability or aggression

๐ Hallucinations

๐ Suspicion or confusion

๐ Refusal to cooperate with care

๐ Changes in sleep patterns

๐ Wandering

These symptoms may be caused by pain, infection, medication, unfamiliar surroundings, fear, or difficulty communicating.

Doctors can assess possible causes and advise caregivers on suitable ways to manage the behaviour. Supporting caregivers is also essential because long-term dementia care can be physically and emotionally demanding.

Reducing the Risk of Dementia

Not every case of dementia can be prevented. However, maintaining good physical, cardiovascular, and mental health may help reduce the risk or delay cognitive decline.

Follow a Healthy Diet

๐ Eat a balanced diet containing vegetables, fruit, whole grains, protein, and healthy fats.

๐ Limit foods high in saturated fat.

๐ Avoid excessive sugar and salt.

Exercise Regularly

Aim for regular physical activity appropriate for your health and mobility, ideally several times each week.

Suitable activities may include:

๐ Walking

๐ Swimming

๐ Cycling

๐ Strength exercises

๐ Balance and flexibility training

Get Enough Sleep

Adequate, good-quality sleep supports memory, concentration, and overall brain health.

Persistent snoring, breathing interruptions during sleep, or excessive daytime sleepiness should be medically assessed.

Manage Stress

Chronic stress can affect sleep, mood, concentration, and memory. Relaxation activities, exercise, social support, and professional counselling may be helpful.

Avoid Smoking and Limit Alcohol

Smoking damages blood vessels and increases the risk of stroke and vascular dementia. Excessive alcohol consumption may also damage the brain and contribute to cognitive decline.

Review Medicines Regularly

Certain medicines may cause drowsiness, confusion, or memory difficulties, particularly among older adults.

These may include some:

๐ Sleeping medicines

๐ Muscle relaxants

๐ Antihistamines

๐ Sedatives

Patients should not stop prescribed medicines independently. A doctor or pharmacist should review whether each medicine remains necessary and appropriate.

Keep the Brain Active

Regularly challenge the brain through activities such as:

๐ Reading

๐ Writing

๐ Learning new skills

๐ Solving puzzles

๐ Playing strategy or memory games

๐ Practising calculation

Maintain Social Connections

Meeting friends, talking with family, joining community activities, and participating in group hobbies can support emotional and cognitive well-being.

When to See a Doctor

Medical assessment is recommended when a person:

๐ Repeatedly forgets recent events

๐ Gets lost in familiar surroundings

๐ Struggles with familiar everyday tasks

๐ Has noticeable changes in language or judgement

๐ Shows significant personality or behavioural changes

๐ Becomes less able to care for themselves

Early assessment can identify treatable causes, support earlier treatment, and help patients and families prepare an appropriate long-term care plan.

 

Reference :

BPK 9 International Hospital What Is Dementia

ArokaGO Providers BPK 9 International Hospital