Chronic fatigue syndrome Flashcards

1
Q

Define chronic fatigue syndrome?

A

Long-term, multisystem condition that is characterised by large reduction in ability to to engage in pre-illness levels of personal, occupational, educational, physical activities due to extreme fatigue

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2
Q

Give 4 examples of aspects of an individual’s life that are affected by chronic fatigue syndrome?

A

Personal, occupational, educational, physical

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3
Q

What is the worldwide prevalence percentage of chronic fatigue syndrome?

A

0.5-2.5%

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4
Q

What is the normal age onset range of chronic fatigue syndrome?

A

Most common in ages 40-60 but can affect all ages

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5
Q

What is the most common and characteristic symptom of chronic fatigue syndrome?

A

Chronic mental and physical fatigue that is worsened by minimal exertion

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6
Q

Does chronic fatigue syndrome affect an individual’s concentration?

A

Yes, individual with CFS presents with poor concentration

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7
Q

Does chronic fatigue syndrome affect an individual’s memory?

A

Yes, individual with CFS presents with impaired registration of memory

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8
Q

Give 2 examples of conditions that can arise from sleep patterns altered by CFS?

A

Sleep pattern alteration can cause:

Insomnia (difficulty falling/staying asleep)

Hypersomnia (inability to stay awake/alert during day despite having sufficient nighttime sleep)

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9
Q

In CFS, what are the results of lab tests and physical examinations?

A

Lab tests and physical examinations are normal, even though patient presents with muscular pain

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10
Q

In CFS, is joint pain inflammatory or noninflammatory?

A

Patient presents with noninflammatory joint pain

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11
Q

What 3 types of investigations can be done when individual with CFS presents with muscular pain, and what are the results?

A

Muscle biopsy, physical examination, electromyography are normal

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12
Q

What proportion of individuals with CFS are affected by mood disorders, and what are the 3 classes?

A

Minority of individuals have mood disorders that are either:

primary (CFS misdiagnosis)

secondary

independent co-morbidities

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13
Q

How is a diagnosis of chronic fatigue syndrome confirmed, and give 4 examples of differential diagnoses?

A

Diagnosis is made by presenting clinical features and excluding other fatiguing disorders (investigation guided by differential diagnosis)

Differentials include CKD, malignancy, anaemia, depression)

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14
Q

Explain the 2 main rehabilitative therapies used for management of CFS?

A

Cognitive behaviour therapy, which challenges unhelpful beliefs and changing coping strategies

Graded exercise therapy for 3 months to reduce inactivity and improve fitness

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15
Q

What drug class is used to treat CFS, and what 3 factors of CFS does this drug treat?

A

Antidepressants used for mood disorders, chronic pain relief and sleep disturbance

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16
Q

What are the 2 first-line classes of antidepressants used to treat CFS, and give one example of each?

A

Tricyclic antidepressant eg. amitriptyline

Selective Serotonin-Reuptake Inhibitor (SSRI) eg. sertraline (commercial name zoloft)

17
Q

What is the prognosis of untreated CFS compared to treated CFS?

A

For untreated CFS, outcome is worse with greater age, comorbidities and severity

Trial showed that 60% patients improve with rehabilitative therapies