‘tired all the time’ and chronic fatigue syndrome
TRANSCRIPT
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‘Tired all the time’ and Chronic Fatigue Syndrome
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Why?
• Common
• Trials show poor patient satisfaction• Poorly understood • CFS recent media coverage• CFS is recognized by NICE as real and defined by
WHO as a neurological illness (G93.3) but many differing attitudes of doctors, public and patients…
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‘oh - is that the thing that makes people lazy?’
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Content
• TATT• Diagnosis• Investigations
• Chronic fatigue• Diagnosis• Investigations• Management
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Tired all the time
• Common
• Average 30 patients/yr per GP
• Most common ‘unexplained complaint’• Underlying factors….
• Physical in ~9%
• Psychological in up to 75%
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History and Examination• Onset and duration and pattern of fatigue
• Shorter duration suggests post-viral • On exertion relieved by rest suggests organic• Worst in morning ? depression
• Sleep pattern• EMW/ unrefreshing sleep ? depression• Snoring/ day-time sleeping ? sleep apnoea
• Associated symptoms• SOB/ weight loss/ anorexia/ pain
• Psychiatric symptoms• Depression/ anxiety/ stress
• Alcohol/ drugs/ OTC• Patient’s views/ worries• Mental state exam• Physical examination usually normal
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Prediction of outcome in patients presenting
with fatigue in primary care (BJGP 2009)
• Prospective cohort study n=642• Adverse prognostic factors for chronicity
• Severity of fatigue and associated pain
• Expectation of chronicity
• Less social support
• Patient expectation of chronicity especially predicted negative outcomes
• Enjoying daily activities associated with positive outcome• ?potentially modifiable patient expectations leading to better
outcome.
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Differential Diagnosis TATT
• Depression• Asthma• DM• Hypo/hyperthyroidism• Anaemia• Sleep apnoea• Infection e.g.
CMV/EBV/Hepatitis
• Neurological e.g. MS• Connective Tissue e.g.
RA/SLE• Peri-menopausal• Malignancy• Chronic Fatigue
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Investigations
• Led by history/ examination• Oxford Handbook suggest if ‘sustained’ fatigue with no obvious
cause check…
• Urinalysis
• FBC/ PV/ CRP/ U&E/ LFT/ Calcium/ TFT/ Glu/ CK/ Coeliac
• Ferritin in young people
• +/- serological viral tests EBV/CMV
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VAMPIRE Study (BJGP 2009)
• VAgue Medical Problems In Research Trial• GP presentations with unexplainable fatigue n=325
• Wait at least 4 weeks
• 78% did not represent for bloods• 8% patients tested had abnormalities • Limited blood set picked up most conditions
• FBC/PV/Glu/TSH
• DM most common then anaemia/ EBV
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Chronic Fatigue Syndrome (ME)
• Female:Male 4:1
• Most common 40-50yrs
• NICE Clinical Guideline 53 - 2007
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Definition• Symptoms present for at least 4 months (3 in kids)• May fluctuate in severity and change in nature
over time• Other diagnoses excluded• Reconsider if none of 4 key symptoms• 1) FATIGUE
• New or specific onset• Persistent and/or recurrent• Unexplained by other conditions• Substantial reduction in activity level• Post-exertional malaise and/or fatigue
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• 2) One or more of….
• Sleep disturbance• Muscle or joint pain• Cognitive dysfunction • Headaches• Painful lymph nodes without enlargement• Sore throat• Physical or mental exertion makes symptoms worse• ‘flu-like’ symptoms• Dizziness and/or nausea• Palpitations in the absence of cardiac pathology
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Severity
• Mild• Mobile• Self caring• Light domestic tasks with difficulty• Still working but days off• Stopped leisure/social activities
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• Moderate• Reduced mobility• Restricted in all activities daily living• Usually stopped work• Need rest periods• Poor/ disturbed sleep
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• Severe• Unable to do any activity for themselves or
carry out minimal activities e.g face washing• Severe cognitive difficulties• Wheelchair bound• Often housebound• Sensitive to light and noise
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Aetiology
• Poorly understood - lots of theories• Viral• Genetic• Immunological• Neuro-endocrine• Psychological
• Best regarded as a spectrum
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Investigations
• FBC• UE• LFT• TFT• CRP• PV• Urinalysis• Glucose• Coeliac serology• Calcium• CK
• Not unless indicated…
• Ferritin unless young
• Viral serology
• B12/ folate
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General management
• Coordinated by named professional• Shared decision making• Individualized management plan• Access to community services
• Occupational• Social care
• Regular structured review• Specialist referral if required
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Drug therapy
• No firm evidence for any• Consider SSRI if mood symptoms• Consider low dose TCA if pain/ sleep problems• Little evidence for….
• Anticholinergics• Steroids• Antivirals• Dexamphetamine• MAOIs
• No evidence for requiring reduced dose
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Non drug treatment
• Discourage rest periods > 30minutes• Cognitive Behavioural Therapy
• Reduces symptoms• Increases functioning• Increases QOL
• Graded Exercise Therapy• Evidence for increased functioning• NOT just ‘exercise more’
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QuickTime™ and a decompressor
are needed to see this picture.
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Others - little evidence but may help
• Sleep Management• Relaxation• Pacing
• Activity Management• Exclusion diets
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Setbacks in recovery
• Expect them• Triggers
• Poor sleep/ increase in activity/ stress• Infections/ other illness
• Should have a clear plan including rests and when to cut activities
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Prognosis
• Most improve over time• Only 5-10% achieve complete recovery to
former levels despite remission • Some relapse
• Should have planned setback strategies
• Small number remain severely affected
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Summary
• Delay Ix for 4 weeks• Simple bloods only• Chronic fatigue is a spectrum but still
poorly understood. • Best evidence is for Graded Exercise/CBT
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Any questions?