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Prevalence of chronic disabling fatigue in children and adolescents
Anne Farmer1, Tom Fowler, Jane Scourfield
1MRC Social, Genetic, Developmental Psychiatric Research Centre, Institute of Psychiatry, London, UK. spjuaef@iop.kcl.ac.uk.
Background:
The epidemiology of chronic fatiguing illnesses in young people is poorly understood.
Aims:
To estimate the lifetime prevalence of different definitions of chronic fatigue in 8- to 17-year-olds.
Method:
Participants came from two population-based twin series. Parents completed self-report questionnaires that inquired whether either child had ever experienced more than a few days of disabling fatigue. Telephone interviews were undertaken for individuals who had experienced such an episode.
Results:
Questionnaires were returned by 1468 families (65% response rate) and telephone interviews were undertaken regarding 99 of the 129 subjects (77%) who had experienced fatigue. The lifetime prevalence estimates ranged from 2.34% (95% CI 1.75-2.94) for disabling fatigue lasting 3 months to 1.29% (95% CI 0.87-1.71) for a disorder resembling adult operationally defined chronic fatigue syndrome.
Conclusions:
From the age of 11 years, young people have similar rates and types of chronic fatiguing illnesses to adults.
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