AGING & MENTAL HEALTH inevitable senility MYTH! growing old ed mental health problems special...
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AGING & MENTAL HEALTH
• inevitable senility MYTH!
• growing old ed mental health problems
• special issues for mental health & elderly?
• interpersonal factors (e.g., social support)
• intra-personal factors (e.g. stress, poverty) • biological/physical factors
• life-cycle factors (history, aging)
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2 categories of mental disorders
(1) Organic
(a) acute: ~20% reversible if treated effectively
(b) chronic: severe, progressive
(2) Functional
• Diagnostic and Statistical Manual (DSM-IV) of the American Psychiatric Association
• normal changes with age make diagnosis difficult
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Dementias• family of diseases characterized by cognitive and behavioural deficits involving some form of permanent brain damage
• must involve change in multiple domains of psychological functioning and impact on daily functioning
• estimated that there are over 50 causes of dementia!!
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Alzheimer’s Disease (AD)
Diagnositic Criteria acc: DSM-IVA. Cognitive deficits manifested by both:
1. Memory impairment
2. One or more of the following: aphasia, apraxia, agnosia, exec. function disturbance
B. Impaired social/occupational functioning
C. Gradual onset, continuing cognitive decline
D. Deficits in A not due other medical conditions
E. Not delerium
F. Not better accounted for by another Axis I disorder
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Alzheimer’s Disease (AD)
• neuritic plaques
• neurofibrillary tangles
• post-mortem - frequency of plaques & tangles
• hippocampus temporal lobe cortex
• Canada(1994): 5.1%; 1% 65-74, 26% for 85+ • 50-70% of dementia diagnoses • insidious onset, progressive
Histopathology
• cell loss (up to 40% brain mass lost)
• no definitive diagnosis
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Alzheimer’s Disease (AD) cont’d ...
Possible AD• memory impairment (recent)• personality changes, depression, withdrawal• concentration difficulties, word finding
Mild AD• memory impairment worsens (remote, new)
• language deteriorates
• agitation, inappropriate emotions
• wandering, sleep disturbances, poor self-care
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Alzheimer’s Disease (AD) cont’d ...
Moderate / Moderately Severe AD• increasingly dependent for daily activities
• extreme mood swings, psychotic tendencies
Severe AD• verbal abilities lost• extreme agitation
• bed-ridden, coma-like stage
do not die of AD, die with AD
life expectancy depends on when diagnosed
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Suspected Causes of AD
Cholinergic Hypothesis• acetylcholine (ACh) in brains of AD patients
• basal forebrain - source of ACh• hippocampus & temporal lobe
- ACh is primary neurotransmitter
Genetic Hypothesis• ApoE e-4 allele, chromosome 21
Trace Metals• high Al content in brain of AD patients• olfactory regions - large accumulations
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Risk Factors for AD
• family history: ~50% of 1st degree relative w/ AD
• age: risk doubles ~ every 5 years past age 60
• lower intelligence• smaller head circumference, brain size
• history of head trauma• decreased level of estrogen after menopause
Neuroimmune system / Inflammatory Response• inverse relationship btwn anti-inflammatory treatment and incidence of AD
Suspected Causes of AD cont’d
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Treatment/Intervention for AD• irreversible, incurable• treatment primarily supportive in nature
• drugs / supplements:(a) to improve cognition tacrine (Cognex), donepezil (Aricept), rivastigmine (Exelon)
(b) to treat behavioural symptoms depression, agitation, sleep, paranoia, apathy
(c) natural supplements / prophylactic measuresVitamin E, Ginkgo biloba, hormones
• environment changes, psychotherapy
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Multi-infarct Dementia/Vascular Dementia
• series of small strokes, at different brain sites
• sudden onset, stepwise progressive deterioration• sign & symptoms highly variable, especially early in the disease• multiples lacunes,grey and white matter
• somatic, neurological and cardiac complaints
• known risk factors, e.g., hypertension, diabetes
• may co-occur with AD
• survival of only 2-3 years
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Fronto-temporal Dementia
• changes in frontal and ant. temporal lobes• ‘simple’ neuronal degeneration• Pick’s bodies
• 1st signs - behav. & personality changes (inappropriate behaviour, apathetic, hyper-orality, hypersexuality)
• ‘frontal symptoms’
• memory normal early on, recall may be affected later
• scant speech - mutism
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Huntington’s Disease
• hereditary (chrom. 4), usual onset in midlife
• lesions in the striatum, atrophy, gliosis
• motor impairments - “Huntington’s chorea”
• psychiatric and personality problems
• cognitive problems late in disease, gradual
• death in 10-20 years
• genetic testing??
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Creuzfeldt-Jakob Disease
• very rare, not an illness of old age
• caused by ‘slow virus’, or prions
• progression is rapid, death within 9-12 months
• behavioural symptoms precede onset
• pattern of decline variable
• myoclonus, seizures, motor problems, EEG abnormalities frequently develop
• diagnosis based on rapid clinical course, confirmed at autopsy
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Illnesses That Can Cause Dementia
Parkinson’s Disease• chiefly a motor disease • higher than average risk of dementing as disease advances
Syphilis
• if untreated, atrophy in CNS over decades
AIDS Dementia Complex• insidious early on (concentration, memory)
• late stages - confusion, disinhibition, motor
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Potentially Reversible Causes of Dementia
• depressive pseudodementia
• hypoxia
• malnutrition, anemia
• infection
• drugs, other toxic substances - “iatrogenic”
• head trauma
• medical conditions
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Affective DisordersDepressionDiagnosis of Major Depressive Episode (DSM-IV)A. 5 or more of the following:
Depressed mood Loss of interestChanges in weight/appetiteInsomnia/hypersomniaPsychomotor changes
Fatigue Guilt/worthlessness Poor concentration Thoughts of death
B. Do not meet criteria for Mixed EpisodeC. Distress/impairment in daily functioningD. Not effect of substance or medical conditionE. Not better accounted for by bereavement
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• mainly affective, may include cognitive changes
• incidence unclear - no more clinical depression in old but perhaps more depressive symptoms
• diagnosis w/ DSM-IV often problematic in old
• overlooked, myth that it is normal
• may manifest differently - depletion syndrome
• somatic complaints
• stigma
• rule out other health problems
Depression contin’d
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Depression cont’d ...
• Early-onset / recurring - genetic? Early trauma?
• Late-onset: psychological factorsbiological factorsneurological factors
• depression and dementia: patientcaregiver
• treatment options: • drugs• ECT• psychotherapy, social intervention
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Depressive Pseudodementia• cognitive dysfunction in depression can mimic dementia• depression is severe, dementia is mild• reversible tragic not to intervene• history, behaviour and neuropsychological measures best for differential diagnosis
Predementia?• pathological neuronal degeneration not yet clinically diagnosable as AD• superimpose depression AD-like symptoms• red flag follow-up
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History and Behavioural Features
Measure AD DPD Symptom duration long short
Prev. psychiatric history unusual usual
Progression of symptoms slow rapid
Patient complaint of deficit variable abundant
Patient valuation of accomplishments
variable minimized
Behaviour congruent with cognitive deficits
usual unusual
Delusions mood independent
mood congruent
Mood disorder slow rapid
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Cognitive Features
Measure AD DPD Memory impaired encoding
and storagedecreased cognitive effort
Language deteriorates w/ progression
intact
Perception/Construction
declines normal
Praxis impaired intact
AttentionProblem SolvingPsychomotor Speed
similar deficits in both
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Suicide
• risk in older depressed patients• 2x higher than in adolescence• older white men highest, 7x er than elderly female
• rates may be underestimated in olde.g., ‘chronic suicide’
• attempts:completed drops dramatically w/ age• women more likely to attempt, men to succeed • suicide ideation, premeditation
but give fewer warnings
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Anxiety Disorders• some studies show more common in old, others show reduced rates compared to young
• common psychiatric condition in old
• men: health triggers; women: personality triggers
• not age, per se, rather changes encountered more often by old
• must consider if appropriate response
• treatments:• benzodiazepines - may be problematic• psychotherapy
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Personality Disorders• behaviour v. different from cultural expectations
• rates across lifespan unclear, some may improve
• late-life onset many factors - environment,interpersonal, stress, coping, health
• interpersonal e.g., stealing accusations • excessive health concerns e.g., hypochondriac
• may also be adaptive:
• schizotypal comfortable w/ loneliness• dependent welcome greater dependency • obsessive-compulsive ‘take care’ of things
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Psychotic Disorders
Schizophrenia• marked disturbance of thought, mood, behav• once thought to onset prior to age 45
• chronic schizophrenia: • institutionalized for decades• not always continual decline
• late-onset schizophrenia/paraphrenia:• rare, mostly women, relegated to institutions • vis/aud impairment, less thought disorder, more paranoid symptoms • risk factors - personality, isolation
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Psychotic Disorders
Delusional (Paranoid) Disorder• pseudo-logical delusions
• 1st symptom after 65 yrs. common
• crucial association w/ motor/sensory impairment
• subtypes: erotomatic, grandiose, somatic, persecutory, jealous, unspecified
• paranoias may be discrete/circumscribed
• most often unhospitalised, harmless but unable to experience intimacy
• may serve a function for the demented
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Alcoholism
• estimates of prevalence in elderly vary• highest in 75+ widowers, nursing homes• 2-6x er in older men than women
• rates in elderly probably underestimated: hidden, unnoticed, misattributed, gradual es, reluctance to report or diagnose
• early-onset: die at younger age, orgrow old, but with consequences
vs. late-onset: 1/2-1/3 of all elderly alcoholicsmore common in older women
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Alcoholism cont’d...
• Diagnostic clues of alcoholism in old age
• insomnia • impotence
• rapid onset of confusional state • uncontrollable hypertension• unexplained falls/bruises
• problems with control of gout
• excessive sleepiness• flushed face• bloated appearance