Chronic Fatigue Syndrome has levels of disability. Some people are hit heavily and can barely function; others manage to get through their workday.
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Level: Symptoms at rest: Symptoms with exercise: Overall activity level: Ability to work: |
10 none none normal full time without difficulty |
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Level: Symptoms at rest: Symptoms with exercise: Overall activity level: Ability to work: |
9 none mild normal full time with difficulty |
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Level: Symptoms at rest: Symptoms with exercise: Overall activity level: Ability to work: |
8 mild worsen activity restriction for activities requiring exertion full time with difficulty in jobs requiring exertion |
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Level: Symptoms at rest: Symptoms with exercise: Overall activity level: Ability to work: |
7 mild some daily activity limitation close to 90% except for activities requiring exertion full time with difficulty |
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Level: Symptoms at rest: Symptoms with exercise: Overall activity level: Ability to work: |
6 mild to moderate daily activities limited 70 to 90% unable to do physical labor; can work light activity with flexible hours |
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Level: Symptoms at rest: Symptoms with exercise: Overall activity level: Ability to work: |
5 moderate moderate to severe 70% of expected no strenuous work; light work for 4-5 hours/day with rest periods |
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Level: Symptoms at rest: Symptoms with exercise: Overall activity level: Ability to work: |
4 moderate moderate to severe 50 to 70% no strenuous work; light work for 3-4 hours/day with rest periods |
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Level: Symptoms at rest: Symptoms with exercise: Overall activity level: Ability to work: |
3 moderate to severe severe 50%; usually confined to the house no strenuous work; light work for 2-3 hours/day with rest periods |
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Level: Symptoms at rest: Symptoms with exercise: Overall activity level: Ability to work: |
2 moderate to severe unable to perform strenuous activity 30 to 50%; unable to leave house except rarely none; confined to bed most of the day; unable to concentrate for more than 1 hour/day |
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Level: Symptoms at rest: Symptoms with exercise: Overall activity level: Ability to work: |
1 severe unable bedridden most of the time no travel outside of the house; cannot concentrate |
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Level: Symptoms at rest: Symptoms with exercise: Overall activity level: Ability to work: |
0 severe continuously unable bed ridden constantly unable to care for self |
Source: The Disease of a Thousand Names - CFIDS - Chronic Fatigue/Immune Dysfunction Syndrome by David S. Bell MD, FAAP