Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mr Chan’s daughter reported noticing memory problems in her father that had concerned her for a year, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Other medical history includes hypertension, hypercholesterolaemia, diabetes mellitus, and a previous stroke. No family history of psychiatric disorders or dementia was reported. Mr Chan had little education: according to his daughter, he probably had more than two years but less than six years of education.

Investigations

CT brain (plain) scan was ordered.

Diagnosis

Mild cognitive impairment.

Management

No medication was prescribed due to the pending investigation findings. Non-pharmacological intervention was indicated: Mr Chan was recommended to a centre-based programme with cognitive stimulation to maintain cognitive and self-care functioning and was encouraged to do regular exercise, have a healthy diet and mental stimulation, manage stress, and maintain an active social life to promote general health and quality of life.

Suggestions for the Primary Care Team

The primary care team may sometimes find it challenging to differentiate between mild vascular cognitive impairment and mild dementia of the vascular subtype. While in this case, the IADLs (basic and instrumental) suggested mild cognitive impairment only, Mr Chan’s cognitive screening test scores were unusually low for mild cognitive impairment. The presence of vascular risk factors nevertheless does not equate to the diagnosis of vascular dementia. The primary care team is advised to monitor the cognitive changes over time and his response to the interventions. A CT scan could help understand the extent of the stroke, while a PET amyloid scan is suggested.

Presentation at the mild cognitive impairment stage or very early dementia is a good time for equipping the person with memory skills or adaptive strategies to enhance memory performance. Although vascular dementia is not yet evident at this moment, preventive measures to minimise vascular-related risk factors are always recommended, such as adopting a healthy diet and exercising regularly, especially in cases with high vascular risk as in Mr Chan’s case. The primary care team should engage him in cognitively stimulating activities while developing a healthy lifestyle.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 3.1 Findings from Mrs Kwan’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Kwan’s daughter reported noticing memory problems in her mother that had concerned her for about two years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

Clinical features of overeating, especially sweet food (including chocolate and candy), suggestive of possible non-Alzheimer’s dementia (bvFTD), were noted. Comorbidities of hypertension, diabetes mellitus, and hypercholesterolemia were reported. No family history of psychiatric disorders or dementia was reported. She had received secondary education.

Investigations

CBP, R/LFT, VDRL, vitamin B₁₂, folate, fasting sugar, fasting lipids, and TFT were ordered. Except for the negative VDRL value and elevated fasting sugar level, all other investigations were normal. A brain CT scan revealed vascular dementia.

Diagnosis

Vascular dementia. Differential diagnoses: frontotemporal dementia and a frontal variant of Alzheimer’s disease.

Management

Donepezil 5 mg daily was prescribed. Mrs Kwan was recommended to join a centre-based programme with cognitively stimulating activities to maintain cognitive and self-care functioning and was encouraged to do regular exercise, have a healthy diet and mental stimulation, and maintain an active social life for general health and quality of life.

Suggestions for the Primary Care Team

Mrs Kwan showed unusually low MMSE and Lawton IADL scores, with a liking for sweet food. In view of the multiple domains of cognitive deficits, Mrs Kwan may have vascular dementia, frontotemporal dementia, or the frontal variant of Alzheimer’s disease. Physicians can observe cognitive and personality changes as well as mood swings over time and response to medication; in cases of declining cognition, memantine can be added on top of donepezil.

In terms of her residual cognitive functions, attention and language appeared to be her areas of strength, and therefore communication and social activities should be maintained and encouraged for as long as possible. In cases of frontotemporal dementia, it is foreseeable that language comprehension and expression will deteriorate further, with mood and behavioural symptoms affecting ADLs, although in this case Mrs Kwan’s ADLs were still independent at the present time. The primary care team should work with Mrs Kwan and her family to encourage her to maintain her existing lifestyle and routine as much as possible, while at the same time enriching her social activities. For her overeating problem, the family will need to be educated that strict restrictions or prohibitions may trigger mood problems, especially in the case of frontotemporal dementia. They should be provided with appropriate care tips for the situation, such as preparing for Mrs Kwan healthy finger food/snacks with low calories decreasing meal size but increasing the frequency of meals.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mr Tang’s wife reported noticing memory problems in her husband that had concerned her for about five to six years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There was no additional clinical feature to consider for non-Alzheimer’s dementia. Comorbidities of hypertension, diabetes mellitus, hypercholesterolemia, and a cerebrovascular accident (six years ago) were reported. No family history of psychiatric disorders or dementia was reported. He has received tertiary education.

Investigations

Calcium, VDRL, vitamin B₁₂, and TSH were ordered. All investigations were normal, except for vitamin B₁₂ deficiency.

Diagnosis

Vascular dementia with possible age-related cognitive impairment.

Management

Donepezil 5 mg daily and vitamin B₁₂ were prescribed. He was also recommended to join a centre-based programme with cognitively stimulating activities for at least 18 months to maintain cognitive function.

Suggestions for the Primary Care Team

With rather intact visuospatial function as shown on the Clock Drawing Test and cognitive impairment after a stroke at an older age, the history is indicative of vascular (post-stroke) dementia with possible age-related cognitive impairment likely due to vitamin B₁₂ deficiency. However, it should be noted that cardiovascular risk factors may also lead to Alzheimer’s disease (1). Memantine may be considered an add-on therapy or when donepezil cannot be tolerated.

At the relatively old age of 91, Mr Tang’s cognitive performance was satisfactory and appeared well maintained. His ADL and IADL performance, however, appeared inconsistent and worse than expected relative to his cognitive functional level: it is common for people with vascular dementia to have their physical functions affected at the same time as their cognitive performance. Maintenance of physical functions, including balance, mobility, and muscle strength, are equally important as cognitively stimulating activities at this moment to prevent future complications, such as falls and muscle wasting.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 3.2 Findings from Mr Fung’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Fung’s wife reported noticing memory problems in her husband that had concerned her for about one and a half years after a minor stroke. However, the decline had become more significant in the last two months. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Comorbidities of hypertension, diabetes mellitus, hypercholesterolemia, and a previous cerebrovascular accident were reported. No family history of psychiatric disorders or dementia was noted. He had received five years of primary education.

Investigations

CBP, R/LFT, calcium, fasting sugar, and fasting lipids were ordered. All investigations were normal except for the elevated fasting sugar. A CT brain scan two years ago revealed multiple bilateral cerebral hypodensities, which can be ischaemic changes or infarction.

Diagnosis

Dementia, likely vascular dementia (mixed dementia could not be ruled out), with no distressed behaviours and neuropsychiatric symptoms of dementia.

Management

At the time of the report, no medication was prescribed, as a blood work-up was awaited. He was encouraged to do regular exercise, have a healthy diet and mental stimulation, manage stress, maintain an active social life, and continue joining social activities classes (e.g., English class and Chinese class) at locations close to his residence. Mr Fung was also recommended to join a centre-based programme for cognitively stimulating activities to maintain his cognitive function and quality of life.

Suggestions for the Primary Care Team

The memory and language problems were mainly related to stroke, with a lot of vascular elements in the history. The CT brain scan can be repeated to characterise the speech impairment, which might be caused by conduction dysphasia in superior angular gyrus syndrome. A cholinesterase inhibitor in combination with memantine may be considered.

There are features suggestive of Alzheimer’s disease; therefore, mixed dementia is the differential diagnosis: Mr Fung presented with a cognitive impairment pattern that is compatible with early Alzheimer’s disease, with higher cognitive functions being impacted first (as shown in his Clock Drawing Test, with worse performance on the drawing part and improving on the copying part), as well as memory and orientation, while ADL performance was more preserved compared with IADL ability. Mr Fung had a relatively active social life, which is a strength. The primary care team, however, needs to remind his family about the need for adaptive strategies to help Mr Fung maintain his social life for as long as possible, for example by using a GPS tracking device or smartphone for safety measures when he goes out, cue cards or reminders in his wallet, and regular telephone contact by carers for caring and safety.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mr Lo’s wife reported noticing memory problems in her husband that had concerned her for about two to three years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ○ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

No additional clinical feature of non-Alzheimer’s dementia was noted. Comorbidities of hypertension, hypercholesterolemia, and old haematologic stroke were reported. No family history of psychiatric disorders or dementia was reported. He has received a secondary education.

Investigations

CBP, ESR, R/LFT, calcium, vitamin B₁₂, folate, fasting sugar, fasting lipid, MSU X R/M and culture test, HbA1C, PSA, and urine albumin/creatinine ratio were ordered. MRI revealed old haemorrhagic insult/cystic change, small vessel ischaemia, lacunar infarct, and mild to moderate cerebral atrophy.

Diagnosis

Mixed vascular and Alzheimer’s disease.

Management

Rivastigmine transdermal system 5 mg was prescribed. Mr Lo was also recommended to join a centre-based programme with cognitively stimulating activities for the maintenance of cognitive function and quality of life.

Suggestions for the Primary Care Team

This is a typical case of vascular dementia with or without Alzheimer’s disease with intact visuospatial function. The response to the cholinesterase inhibitor should be watched. On top of the cholinesterase inhibitor, memantine may also be considered. A CT brain scan can be considered to confirm the vascular burden.

Mr Lo had satisfactory performance in his cognitive functions in general, although his impairment in verbal expression early in the course of the disease – which was noted in both cognitive assessment and reports on daily living – was atypical of Alzheimer’s disease and may reflect the location where the small vessel ischaemia has happened. Mr Lo’s difficulties in ADL/IADL tasks were mainly caused by his short-term memory deterioration. At this stage, therefore, the primary care team could focus on working with Mr Lo and his family to identify the best ways to minimise the impact of short-term memory decline and maintain his ADL/IADL functioning. For example, Mr Lo may be allowed more time to perform his ADL/IADL tasks, with a carer providing only verbal cues. A carer should accompany Mr Lo in using public facilities, transportation, shopping, etc., to encourage him to stay in touch with the community in a safe manner. The primary care team should also advise the family to take safety precautions to enable Mr Lo to go out of nearby areas, for example, by using a location-tracking device.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 3.3 Findings from Mrs Yip’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Yip’s daughter reported noticing memory problems in her mother that had concerned her for half a year, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. She was known to a geriatric medicine outpatient clinic for hypertension. She was on a daily dosage of methyldopa 500 mg, atenolol 50 mg, hydrochlorothiazide 25 mg, and valsartan 160 mg. No family history of psychiatric disorders or dementia was reported. She had received one year of primary education.

Physical Examination Findings

General examination revealed a depressive-looking mood/affect problem, but no hygiene problem. No significant CVS or CNS findings.

Investigations

CBP, TSH, and Vitamin B₁₂ were ordered. Results were normal.

Diagnosis

Dementia with depression.

Management

Lexapro 5 mg daily was prescribed. She was also recommended to join a specialised day care service for two days per week to receive structured and tailored intervention programmes with cognitively stimulating activities to delay deterioration and maintain quality of life.

Suggestions for the Primary Care Team

Mrs Yip showed a typical pattern of Alzheimer’s disease with severe depression. It is recommended to focus treatment on the depression first, arrange social support, and reassess to see if cognition improves with improvements in depressive symptoms (‘pseudodementia’). Methyldopa should be stopped as it can lead to or exacerbate underlying depression. Physicians may review Mrs Yip’s condition two to three months later after stopping methyldopa.

In this case, inconsistency among different assessments can be observed: Mrs Yip’s ADL/IADL performance was higher than would be expected from her cognitive assessment findings on MMSE; at the same time, the Clinical Dementia Rating results suggested mild cognitive impairment only. It is likely that Mrs Yip’s depressive mood has significantly masked her actual performance in the cognitive assessment, but not so much in affecting her daily life. The primary care team should explore further the reasons for the discrepancy: whether it was related to her level of motivation or denial of impairment and refusal to respond and answer properly; finding out would help develop a proper care plan. Mrs Yip should also be reassessed as her mood improves, to find out the actual level of her existing strengths and weaknesses. The primary care team should also note that 11/15 on GDS-15 suggests quite a significant level of depressive mood; the causes and factors contributing to her high level of depressive symptoms should be investigated.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mrs Lam’s social worker reported noticing memory problems in her client that had concerned her for a few years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ○ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features of non-Alzheimer’s dementia. Mrs Lam lived alone and had poor social support. She is known to a geriatric medicine outpatient clinic for hypertension. Comorbid trachoma was also reported. She did not receive any formal education.

Physical Examination Findings

No significant findings, except that Mrs Lam denied depressive thoughts during the general physical examination but became teary when talking about her son who was distant from her.

Investigations

No acute or subacute cerebral infarction was found on brain MRI. Cerebral atrophy (GCA score 2) was noted, with more prominent frontoparietal lobe atrophy, MTL R = 15.8 L + 13.6, Scheltens R = L = 1, and ARWMC 3. Possible subclinical hyperthyroidism, pending review at a general outpatient clinic.

Diagnosis

Mixed dementia, vascular dementia, and SVD subtype +/− limbic sparing-type Alzheimer’s disease, with mild depression.

Management

Donepezil 5 mg daily was prescribed. Mrs Lam was also recommended to join a centre-based programme to receive cognitively stimulating activities to maintain her cognitive function and quality of life.

Suggestions for the Primary Care Team

This is a typical case of mood problems (anxiety and/or depression) mimicking dementia in an older person with poor social support. In view of the age of onset, with significant symptoms observed in her late 80s, negative Clock Drawing Test results, and acceptable visuospatial functioning, the mild cognitive impairment could also be age-related. A trial of donepezil 2.5 mg daily can be considered, while an antidepressant, such as escitalopram, can be considered on top of donepezil.

Given her general low score on cognitive assessments, it is out of expectation that Mrs Lam’s ADL/IADL functioning was independent. There is a possibility that her poor cognitive performance was a result of her depressive mood and low motivation. In Mrs Lam’s case, while a depressive mood can be observed, the GDS-15 result was not available. The primary care team should note that it is common for older people with depressive mood to be unwilling to share their problems/feelings with others. A social worker from the team would be in a good position to explore further and intervene as necessary, ensuring rapport building and a trusting relationship. Building on Mrs Lam’s insight into her mood, the team can work with Mrs Lam to identify the best support/intervention, which could include counselling for Mrs Lam to accept the fact that her relationship with her son is beyond repair, as well as family intervention, conflict resolution, or other psychotherapies tailored to Mrs Lam’s situation.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mr Leung’s wife reported noticing memory problems in her husband that had concerned her for about one to two years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features of non-Alzheimer’s dementia. Comorbidities of hypertension, diabetes mellitus, hyperlipidaemia, and alcohol dependence history were reported. He was on quetiapine 25 mg at night. No family history of psychiatric disorders or dementia was reported. He did not receive any formal education.

Investigations

CBP, R/LFT, VDRL, vitamin B₁₂, folate, and CT scan were ordered.

Diagnosis

Alzheimer’s disease.

Management

Vitamin B complex daily was prescribed. A short-term cognitive rehabilitation programme was arranged to maintain cognition and self-care functioning. Mr. Leung was also encouraged to do regular exercise, have a healthy diet and mental stimulation, and engage in an active social life. He was also recommended to join a centre-based programme with cognitively stimulating activities to maintain cognitive function and quality of life.

Suggestions for the Primary Care Team

Mr Leung’s presentation and history are compatible with Alzheimer’s disease, with the cognitive impairment possibly related to his drinking problem and the use of quetiapine. Enquiries into the reasons for a previous quetiapine prescription are suggested to find out if there is any history of hallucinations, delusions, sleep problems such as REM sleep disorder, or any parkinsonism features suggesting cerebral Lewy body disease. Given that his cognitive symptoms were noted to first occur in the last one to two years according to his wife, it is worth investigating the history of alcohol dependency and management. If the timelines coincide and quetiapine is prescribed as part of the management, Mr Leung’s cognitive impairment may be related to his drinking problem, thus the unexpectedly poor performance on cognitive assessment. Another possibility that quetiapine was prescribed is REM sleep disorder, where a person affected may lose their temper during the night, which is interpreted as agitated behaviour. Donepezil 2.5 mg and thiamine 50 mg daily can be prescribed if the client is still on alcohol. However, it is advisable to observe the side effects of quetiapine and reduce the dosage after ascertaining the reason for the medication. Physicians may consider memantine if irritability is noted: alcohol has anxiolytic and sedative effects, and some patients with alcohol-drinking problems may have anxiety-prone personalities.

A strength in Mr Leung’s case is that his ADL is still independent. The primary care team nevertheless needs to prevent further dysfunctions because of his psychiatric condition. Negative symptoms, such as demotivation, tiredness, and psychosomatic discomfort, may be easily induced. The primary care team should also assess carer stress and skills. It is possible that Mr Leung’s wife is experiencing a high level of stress, which is common when caring for a spouse with cognitive impairment and possible psychiatric symptoms, and the primary care team should make sure that effective support is available when needed.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 3.4 Findings from Mrs Yuen’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Yuen’s husband reported noticing problems with money management for two years. She became passive and seldom talked to the family, developed a liking for sweets, and would sometimes ask for food non-stop. She gained weight recently and got lost once when she went out by herself. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ○ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

Mrs Yuen used to work in a trading company. She had received secondary education.

Physical Examination Findings

Palmomental reflex positive.

Investigations

SPECT showed unilateral right frontotemporal hypoperfusion.

Diagnosis

Frontotemporal dementia.

Suggestions for the Primary Care Team

This is a case of frontotemporal dementia. The carer reported the mood and temper issues as the first symptoms. Mrs Yuen showed apraxia; it would be of moderate severity if it were an Alzheimer’s disease; however, the MMSE score was not comparable with Alzheimer’s disease. Her Clock Drawing Test result showed perseveration. Moreover, Mrs Yeung was apathetic. From the investigation, hypoperfusion in the right frontal lobe was noted, which matched the apathetic issue. Unilateral right frontotemporal hypoperfusion shown on SPECT is compatible with frontotemporal dementia, whereas symmetrical temporoparietal hypoperfusion would be expected in Alzheimer’s disease. The MMSE score showed no impairment in language, yet the family carer reported the word-finding issue, showing that the MMSE is not sensitive in frontotemporal dementia. Therefore, the diagnosis is led by clinical symptoms and supported by psychometric testing and neuroimaging for atypical symptoms.

People with frontotemporal dementia may present at the onset with mood, behaviour, or personality changes, which can occur earlier than cognitive symptoms. Carers should be well prepared for the expected changes, including significant dysfunctions in verbal expression, mood swings, and rapid deterioration in cognitive functions (progressing much faster than typical Alzheimer’s disease). The primary care team should work with the family to understand and become familiar with the person’s habits, preferences, and character, so that when verbal expression becomes limited in the future, the family will still be able to understand her needs. Note that prohibiting eating can trigger an agitated mood; instead of stopping her from eating, providing finger food or snacks with low calories would help. Advance care planning with enduring powers of attorney (EPOA) appointed to handle the assets would be needed.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mr Ng’s brother reported noticing an insidious onset of memory problems in Mr Ng that had concerned him for about a year, with a more significant decline after his hospitalisation earlier this year. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ○ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Comorbidities of hypertension and spontaneous coronary artery dissection were reported. No family history of psychiatric disorders or dementia was reported. He had received secondary education.

Diagnosis

Delirium on cognitive frailty. Differential diagnosis: mild cognitive impairment.

Management

No medications were prescribed. He was recommended to join a centre-based programme with cognitively stimulating activities, for the maintenance of cognitive function and quality of life.

Suggestions for the Primary Care Team

As the deterioration happened after hospitalisation and the cognitive impairment appeared for only a year, with intact visuospatial function, Mr Ng’s presentation is compatible with delirium on cognitive frailty: unresolved delirium could lead to post-operation cognitive decline. It would be useful to consider the time interval between his discharge and when the assessment was done: if the time interval is long, the likelihood that his performance was affected by delirium is lower. In any case, as delirium is usually reversible, it is recommended to observe for spontaneous improvement, with re-assessments, including cognitive tests, in three to six months’ time. The team should also conduct a medication review.

At present, Mr Ng’s cognitive performance on MMSE was satisfactory; although more obvious impairment was shown on MoCA, the Global deterioration scale rating showed only mild functional impairment, with largely independent ADL and IADL. Considering Mr Ng’s relatively old age, the profile is more compatible with mild cognitive impairment or age-related cognitive frailty at this moment, although the condition could progress or worsen in the event of a change in his health condition. The primary care team is therefore advised to focus on maintaining a good health status, and physical health is a more important focus than other issues at this stage.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 3.5 Findings from Ms Lo’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Ms Lo’s daughter reported noticing memory problems in her mother that had concerned her for about one to two years. Delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Lo had hypertension. She was on amlodipine 2.5 mg daily, enalapril 10 mg daily, aspirin 100 mg daily, piperidine 20 mg twice a day, and simvastatin 20 mg at night. No family history of psychiatric disorders or dementia was reported. Ms Lo currently lives with a domestic helper. She had received primary education.

Physical Examination Findings

General examination revealed no affect or hygiene problem. No significant CVS and CNS findings.

Diagnosis

Mild to moderate Alzheimer’s disease.

Management

Rivastigmine transdermal system 4.6 mg daily was prescribed. Ms Lo was recommended to join a specialised day care service for two days per week to receive structured and tailored intervention programmes and cognitively stimulating activities to delay deterioration and maintain quality of life.

Suggestions for the Primary Care Team

Ms Lo presented at an old age (89 years) with a typical impairment pattern, although her MMSE performance was quite preserved. Her performance in all cognitive domains was generally satisfactory, except for short-term memory. Her impairments appeared more significant in basic ADLs than in IADLs, which is not typical in Alzheimer’s disease, although the effects of age, depressive mood, and frailty should be taken into consideration. The obvious depression may be linked with cognitive frailty and thus should be treated. Further investigations into any relationship between her delusional ideations and depressive mood are also warranted. Pseudodementia is the differential diagnosis. An antidepressant, such as escitalopram 5 mg at night-time, can be prescribed. Social and leisure activities that are cognitively stimulating, such as card games, ball games, and board games (or Mahjong) tailored to her interests may be more appealing and thus effective and can be recommended instead of more formal cognitive training or exercise. Ms Lo’s overall functions can be expected to improve along with improvements in mood.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mrs Kong’s daughter reported noticing memory problems in her mother that had concerned her for about two to three months, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Comorbidities of hypotension for over 30 years and osteoarthritis of the knees were reported. Mrs Kong lived alone. She had received a secondary education.

Diagnosis

Severe bradycardia on P/F with hypotension.

Management

Mrs Kong was already on memantine 5 mg prescribed by her private doctor. No further medication was prescribed pending the work-up. She was recommended to join a centre-based programme with cognitively stimulating activities, for the maintenance of cognitive function and quality of life.

Suggestions for the Primary Care Team

This case would require a case conference involving specialists. There are several points worth noting: the history of cognitive decline is short at only three months. Performance on MMSE was largely preserved, with intact visuospatial functioning and satisfactory performance in overall daily activities. Given the atypical presentations, a diagnosis of dementia cannot be given until other factors have been ruled out. Cognitive frailty may be involved, and poor attention and anxiety symptoms elicited during the clinical interview for staging suggest possible hidden mood problems. The primary care team should investigate further Mrs Kong’s mental health, including her mood, by interviewing Mrs Kong and soliciting information from her family. Bradycardia and low blood pressure need further work-up, as a cholinesterase inhibitor is contraindicated. Review of medications, management of hypotension and bradycardia, neuroimaging, and close monitoring are recommended.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mr Cheng’s daughter reported noticing memory problems in her father that had concerned her for about a year. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ○ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ○ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Comorbidities of benign prostatic hyperplasia and thalassemia trait were reported. He was on terazosin. No family history of psychiatric disorders or dementia was reported. He had received a secondary education.

Physical Examination Findings

Mr Cheng appeared to have fair hygiene on a general examination, which was unremarkable. The heart sounded normal, with no murmur or carotid bruit noted.

Investigations

CBC, MCV, platelet, FBS, LDL, UA, creatinine, and ALT were ordered. Resulted CBC Hb 12.2, MCV 69, platelet 114, FBS 5.2, LDL 2.5, UA 0.15, creatinine 81, and ALT 23. ECG and CSR revealed mild upper thoracic scoliosis.

Diagnosis

Mild dementia with hoarding behaviour.

Management

No medication was prescribed at this stage due to the pending work-up. Mr Cheng was recommended to join a centre-based programme with cognitively stimulating activities for the maintenance of cognitive function and quality of life.

Suggestions for the Primary Care Team

Mr Cheng showed intact visuospatial ability but rather prominent disinhibition symptoms and poor awareness of personal hygiene; the presentation is more compatible with frontotemporal dementia than Alzheimer’s disease. Low MCV is also of note, which may be thalassemia minor or iron deficiency. It is advisable to check against his alcohol-drinking history and family history of psychiatric symptoms. The use of selective serotonin reuptake inhibitors and/or valproate for managing behavioural symptoms can be considered. This case would benefit from a case conference and psychiatric referral to rule out psychiatric disorders.

Distressed behaviours and neuropsychiatric symptoms that are related to habits, such as hoarding and poor hygiene, generally do not occur over a short period of time. They often start in the form of minor problems or issues, such as needing reminders to get changed, mistaking dirty clothes as clean, hiding their own belongings at home, and refusing to throw away trash. Hoarding behaviours may reflect an underlying sense of increasing insecurity, depression, or anxiety. In Mr Cheng’s case, as the distressed behaviours and neuropsychiatric symptoms are severe and well established and considering his good cognitive functions, including judgement and problem-solving, with deteriorated/deteriorating short-term memory, intervention strategies should be designed according to these strengths and weaknesses. Instead of aiming to correct and eliminate the well-established behaviours, the focus of intervention should be adaptive, with a goal to minimise the negative impact of these behaviours on Mr Cheng and his carers. Engaging Mr Cheng fully in well-structured, routine daily living activities, such as by offering full-day service in a day care centre for six days a week with scheduled activities, would help. Modifying the environment, such as by removing out of sight objects that are not needed (dirty clothes, unused utensils, etc.), can also be recommended. To minimise toileting behaviours in inappropriate places, the primary care team may advise the carers to ensure Mr Cheng can easily find his way to the toilet, with convenient accessible facilities, introduce a regular toileting schedule (e.g., toileting reminders at least once an hour), and scheduled showering or bathing at about the same time every day. For his habit of picking up dirty tissues and cigarette butts, carers may try to provide in-kind incentives and divert his attention by engaging him in activities that are meaningful to Mr Cheng.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 3.6 Findings from Mr Chan’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Chan’s daughter reported noticing memory impairment and aberrant behaviours for about two years and parkinsonism within one to two years. No delusional ideations were reported, although visual hallucinations were noted: Mr Chan would sometimes see children in his flat, which was not reported as a frightening experience. He was noted to have REM behaviour disorder for three years, and he would hit his wife (who has now passed away) in his sleep. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Comorbidities of hypertension and benign prostatic hyperplasia were reported. No family history of psychiatric disorders or dementia was reported. He had received two years of education.

Physical Examination Findings

On physical examination, Mr Chan showed parkinsonism features, a masked face, stooped posture, bradykinesia, and a shuffling gait.

Diagnosis

Cortical Lewy body disease.

Management

A cholinesterase inhibitor and low-dose carbidopa/levodopa were prescribed. Mr Chan is recommended to join a specialised dementia day care service, with structured activities and interventions for mood and quality of life, with carer support and education programmes.

Suggestions for the Primary Care Team

In cortical Lewy body disease, the primary symptoms can start with physical dysfunctions and psychiatric and psychological symptoms, which may occur earlier than cognitive symptoms. In the case of Mr Chan, his symptoms started in the form of aberrant behaviour, parkinsonism, and hallucinations, within the same time period (i.e., in the last one to two years) as memory problems were noted. At this stage, the primary care team should first attend to the impact of the disease on his physical functions, such as fall risk, sleeping quality, and safety. Mr Chan’s deterioration in ADL functions may be caused by restricted mobility and slow reactions; giving him enough time to complete the ADL tasks may help. On the other hand, his condition would also be complicated by his physical impairments. For example, ongoing hallucinations and poor sleep quality can contribute to negative moods. The primary care team should pay attention to carer stress and intervene accordingly.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 3.7 Findings from Mrs Yeung’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Yeung’s husband reported noticing memory problems in his wife that had concerned him for more than a year. Delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ○ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

A clinical feature of complex visual hallucinations (occasionally seeing deceased relatives) of non-Alzheimer’s dementia (Lewy body dementia) was noted. Comorbid arrhythmia was reported. No family history of psychiatric disorders or dementia was reported. She had received three to four years of education.

Investigations

CBP, ESR, R/LFT, calcium, vitamin B₁₂, folate, fasting sugar, fasting lipid, MSU × R/M and culture test, CXR, and ECG were ordered. A Brain CT scan was also ordered.

Diagnosis

Mild Alzheimer’s disease.

Management

No medications were prescribed at this stage. Mrs Yeung was recommended to join a centre-based programme with cognitively stimulating activities for the maintenance of cognitive function and quality of life.

Suggestions for the Primary Care Team

This is a case of Alzheimer’s disease with significant cognitive frailty from age. Despite atypical presentation (presence of hallucinations and onset at a relatively older age), it is recommended to treat Mrs Yeung’s case as in Alzheimer’s disease. Donepezil 2.5 mg can be prescribed to observe any changes in hallucination and cognition. Antipsychotics are not indicated, as Mrs Yeung has no distress or other negative emotions associated with the visual hallucination.

The presence of hallucinations may be related to Alzheimer’s disease pathology, cognitive frailty, or other reasons, which should be further explored. The description of seeing deceased relatives in this case appeared to be a complex hallucination, which is quite uncommon in Alzheimer’s disease. Physicians could investigate further the nature of the hallucination; for example, more information is needed regarding the primary experience more compatible with a simple hallucination (e.g., shadow) that was interpreted as her deceased relatives; whether the hallucination happens within a certain context, and if so, whether any specific time, place, and triggering factors could be identified. The possibility of these hallucinations happening around sleep (hypnagogic and hypnopompic hallucinations), or confusion of memories from dreams with reality should also be explored, especially if they trigger any negative moods or behaviours.

The cognitive deterioration and other symptoms have likely been present for more than a year. Although Mrs Yeung’s cognitive impairment level is compatible with mild dementia, her orientation to place is better than expected. Her attention and social communication are preserved, which are Mrs Yeung’s strengths at the moment. Given her good ADL, satisfactory IADL, and remaining ability to handle simple household tasks, her family should be advised to continue to involve her in daily living activities. Social and leisure activities that are cognitively stimulating, as compared with cognitive training or exercises that focus only on cognitive improvement, are better choices to enhance both cognition and quality of life.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mrs Lau’s daughter reported noticing memory problems in her mother that had concerned her for about three to four years, with an acute decline for a few months although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Comorbidities of diabetes mellitus, hypertension, hypercholesterolemia, gout, cerebrovascular accidents, vitamin B₁₂ deficiency, bilateral cataract, and hip replacement were reported. She was on a vitamin B₁₂ supplement. No family history of psychiatric disorders or dementia was reported. She had received secondary education.

Investigations

CBP, R/LFT, calcium, vitamin B₁₂, folate, fasting sugar, and fasting lipids were ordered. CBP resulted in Hb 11.4, R/LFT Un 9.2 creatinine 151, calcium 2.27, vitamin B₁₂ deficiency, fasting sugar 7.5, and fasting lipid TC 5.7 LDL 3.5, TG 2.8, and HDL 0.9. A CT scan revealed small vessel disease.

Diagnosis

Dementia, likely vascular dementia or due to low vitamin B₁₂; acute decline; probable delirium.

Management

No medications were prescribed due to pending further work-up. Mrs Lau was recommended to join a centre-based programme with cognitively stimulating activities, for the maintenance of cognitive function and quality of life.

Suggestions for the Primary Care Team

Mrs Lau’s case is likely vascular (post-stroke) cognitive impairment or mixed dementia; the acute cognitive deterioration was potentially a small stroke, which showed improvement afterwards, while vitamin B₁₂ deficiency may be a concomitant finding. Low-dose donepezil 2.5 mg can be started to observe any change in cognition and to replace vitamin B₁₂ if the level is low. Memantine may also be considered on top of cholinesterase inhibitors for vascular dementia.

Slurred speech and other problems in verbal expression suggest that Mrs Lau is stepping into the late stage of dementia. At this stage, the focus should shift from improving functioning to enhancing the caring skills of carers and the quality of care for the person with dementia. Maintaining a stable mood, by engaging her in her interests through passive participation, such as playing her favourite songs at home, family gatherings, or outdoor activities such as a walk in the garden or a park, would help. Family carers should be equipped with caring skills for physical dysfunction as well, such as feeding and monitoring for any choking while eating, transferring skills (e.g., from bed to chair), and skin condition monitoring.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mr Yan’s wife reported noticing memory problems in her husband that had concerned her for about two to three years. Delusional ideations were reported (others stealing from him). Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ○ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Comorbidities of hypertension, hypercholesterolemia, benign prostatic hyperplasia, cerebral vascular accident (approximately 40 years ago; informant was uncertain about date), and osteoarthritis (informant was unsure) were reported. No family history of psychiatric disorders or dementia was reported. He had received two to three years of education.

Investigations

Calcium, VDRL, and vitamin B₁₂, folate, and a CT scan were ordered.

Diagnosis

Frontotemporal dementia.

Management

No medications were prescribed due to pending further work-up. Mr Yan was recommended to join a centre-based programme with cognitively stimulating activities, for the maintenance of cognitive function and quality of life.

Suggestions for the Primary Care Team

As behavioural problems were the key symptoms in this case, with delusional ideations, a frontal type of dementia rather than Alzheimer’s disease should be considered. Management of this case would benefit from a case conference involving specialists.

In Mr Yan’s case, the carer’s stress is a concern. Considering that his wife is an older person herself, she may not be able or suitable to remain in the primary carer role, especially with the verbal and physical aggression that can cause great distress to her. The primary care team should discuss with the family regarding the need to refer to social services for long-term care arrangements. His delusional ideations can be helped with the use of antipsychotics together with a caring strategy. Antipsychotics or valproate are indicated for severe behavioural symptoms. His family should also be advised on strategies that can minimise the distressed behaviours and neuropsychiatric symptoms of dementia, such as by providing him with a locked cupboard or drawer where he can place his belongings. The primary care team should explore family support and relationships in tailoring the care plan.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 3.8 Findings from Mrs Chan’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Chan’s son reported noticing memory problems in his mother that had concerned him for about a year. Delusional ideations were reported (others stealing things from her). Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ○ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. No comorbidity or family history of psychiatric disorders or dementia was reported. She did not receive any formal education.

Physical Examination Findings

General examination revealed no depressive-looking mood/affect problem, but showed general hygiene problems. CVS findings revealed BP 114/65 mm Hg.

Investigations

CBP, ESR, R/LFT, calcium, VDRL, vitamin B₁₂, fasting sugar, MSU × R/M and culture test, CXR, and ECG were ordered. All investigations were normal, except that CXR revealed cardiomegaly, and ECG revealed LVH and ST depression. An MRI plain scan revealed a 2.4 cm × 1.5 cm lobulated soft tissue mass over the cerebellopontine angle extension to the right medial temporal extra acid region and possible meningioma.

Diagnosis

Intracranial tumour.

Management

No medications were prescribed due to pending further work-up. Mrs Chan was recommended to join a specialised day care service for two days per week, with structured and tailored intervention programmes and cognitively stimulating activities to delay cognitive deterioration and maintain her quality of life.

Suggestions for the Primary Care Team

With the abnormal MRI results and considering the relatively young age of Mrs Chan, her clinical suspiciousness, unusual symptoms, and self-awareness, Alzheimer’s disease is unlikely. Advanced imaging is recommended. This case would benefit from a case conference involving specialists, and a referral to a neurosurgeon is indicated. Mrs Chan’s support appeared to be good, likely with good care and a high level of awareness from her son, which explained the satisfactory overall functions and very mild impairment, including cognition, physical, and ADL/IADL functioning. The primary care team is recommended to observe her cognition until a clear picture of the brain tumour is available and reassess after Mrs Chan’s brain tumour is treated, to find out the actual impact of the tumour on her functioning.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Drawing (3 o’clock).

(c) Clock Copying (10 past 10)

Figure 3.9 Findings from Mr Chan’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Chan’s wife reported noticing personality changes and temper outbursts that had concerned her for about two years, although no delusional ideations were reported. There were episodes when Mr Chan’s behaviours appeared abnormal to his wife: he would shout at the TV when it was showing a violent scene, use an umbrella to hit his wife, and take a lot of toilet paper whenever he went to the toilet. He was also noted to be wandering and unable to sit still for more than 30 minutes. He had a minor stroke five years ago. He received a secondary school (F.3) level of education. Using the GPCOG Informant Interview, the following areas were noted to show more trouble (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

No family history of psychiatric disorders or dementia was reported. Mr Chan was a merchant and owned an advertising company. He was retired, and the company was passed down to one of his two sons. He lived with his wife and a domestic helper. His wife expressed a high level of stress. Mr Chan had received approximately nine years of formal education.

Diagnosis

Frontotemporal dementia.

Suggestions for the Primary Care Team

In this case of younger-onset dementia (at the age of 65 years), the first symptom observed is personality related; impaired visuospatial ability was also evident in the Clock Drawing Test. The carer reported that the violence and emotional reactions were triggered after watching a violent scene. This is a case of frontotemporal dementia, and a referral to secondary care is recommended for a work-up with advanced neuroimaging, usually requiring a functional scan (e.g., SPECT). In frontotemporal dementia, primary symptoms are often related to mood and behaviours instead of cognitive impairment. Although the general functioning of Mr Chan remained satisfactory, the primary care team should work with his carers to ensure preparedness for future changes in his condition, including the onset of various dysfunctions such as language, mood swings, and rapid deterioration of cognitive and other functions, as compared with the gradual decline that would be expected in Alzheimer’s disease.