Childhood chronic fatigue syndrome

Abstract:

Chronic fatigue syndrome in childhood and adolescents(CCFS) is a complex and debilitation with severe morbidity and confusion. It is common condition with up to 3-5% of children and adolescents showing strange fatigue and confusion for more than 30 days. In this condition, four major symptoms are important: sleep disorders, easy fatigability, disturbed learning and memorization and immunological problems. Routine laboratory studies are similar to adult CFS, although abnormalities can be seen on serum pyruvic acid level, OGTT pattern, deep body temperature rhythm, hormonal secretion rhythm, and cerebral blood flow. For a diagnosis of CCFS, a research group supported by Japanese ministry of health, labor and welfare developed CCFS case definition on 2004. Treatment focused to correct disrupted circadian rhythms and supply of energy.

 

Source: Miike T. Childhood chronic fatigue syndrome. Nihon Rinsho. 2007 Jun;65(6):1099-104. [Article in Japanese] https://www.ncbi.nlm.nih.gov/pubmed/17561704

 

Exercise testing in children and adolescents with chronic fatigue syndrome

Abstract:

The objective of this study was to evaluate exercise capacity in children and adolescents diagnosed with Chronic Fatigue Syndrome (CFS). We examined 20 patients (12 girls and 8 boys; mean age 14.9 +/- 3.7 years) diagnosed with CFS.

Exercise capacity was measured using a maximal exercise test on a bicycle ergometer and an expired gas analysis system. Fatigue was assessed using a questionnaire and a daily activity diary was used to describe activities for three days. Z-scores were calculated using age- and sex-matched reference values. Z-scores in children and adolescents with CFS were – 0.33 +/- 1.0 (p = 0.17) for peak oxygen uptake, – 1.13 +/- 1.41 (p = 0.002) for relative peak oxygen uptake [ml/kg/min] and – 0.93 +/- 1.29 (p = 0.07) for maximal work load. Both heart rate and blood pressure at peak performance were significantly reduced compared to reference values.

Fatigue levels were significantly positively associated with age and negatively with blood pressure at peak exercise (p < 0.05). In conclusion maximum exercise testing was feasible in young people with CFS. Maximal exercise capacity was only reduced in a minority of the patients and was related to current physical activity levels.

 

Source: Takken T, Henneken T, van de Putte E, Helders P, Engelbert R. Exercise testing in children and adolescents with chronic fatigue syndrome. Int J Sports Med. 2007 Jul;28(7):580-4. Epub 2007 Mar 15. https://www.ncbi.nlm.nih.gov/pubmed/17357961

 

Chronic fatigue syndrome of childhood. Comparative study with emotional disorders

Abstract:

OBJECTIVE: To examine clinical specificity in chronic fatigue syndrome (CFS) of childhood, by comparing clinical features in childhood CFS and in emotional disorders (ED).

METHOD SAMPLE: 28 children with CFS; 27 with ED.

MEASURES: History of disorder; K-SADS psychiatric interviews; self-esteem and physical symptoms questionnaires; premorbid history, behavioural and personality assessments.

RESULTS: There were high levels of comorbid emotional disorders in children with CFS, and the two groups were comparable on self-esteem, but CFS children endorsed more fatigue and other somatic symptoms. The two groups were comparable on age at illness onset, but parents of children with CSF reported more biological illness precipitants, more pre-morbid recurrent medical problems and infections. The CFS group had fewer pre-morbid psychological problems and less psychiatric comorbidity than the ED group.

CONCLUSION: There is considerable clinical overlap between CFS and ED of childhood, but there are also differences in clinical presentation between these disorders.

 

Source: Garralda ME, Rangel L. Chronic fatigue syndrome of childhood. Comparative study with emotional disorders. Eur Child Adolesc Psychiatry. 2005 Dec;14(8):424-30. http://www.ncbi.nlm.nih.gov/pubmed/16341498

 

Children and adolescents with Chronic Fatigue Syndrome in non-specialist settings: beliefs, functional impairment and psychiatric disturbance

Abstract:

BACKGROUND: Adolescents with Chronic Fatigue Syndrome (CFS) seen in specialist centres have substantial psychological and functional impairment. Beliefs about activity levels may be important in the development of CFS.

METHOD: The aim was to investigate psychological and functional impairment, and beliefs in children and adolescents with CFS recruited from non-specialist services. A total of 30 such individuals participated, and 30 young people with Inflammatory Bowel Disease (IBD) formed the comparison group.

RESULTS: Emotional symptoms and disorder were high in both groups. In all, 50% of those with CFS and 30% with IBD reached the threshold for emotional disorder according to the Strengths and Difficulties Questionnaire (SDQ) parent report, although this difference did not reach statistical significance. Participants with CFS scored statistically significantly higher on measures of functional impairment, including school non-attendance, compared to those with IBD. According to questionnaire responses, those with CFS were statistically significantly more likely to favour rest rather than exercise compared to those with IBD. Comparison of parental beliefs did not show such a difference.

CONCLUSIONS: These young people with CFS were at high risk of psychiatric disorder. They were substantially disabled when compared to individuals with a known chronic illness. Also, as a group, they were characterised by a preference for rest rather than exercise.

 

Source: Richards J, Turk J, White S. Children and adolescents with Chronic Fatigue Syndrome in non-specialist settings: beliefs, functional impairment and psychiatric disturbance. Eur Child Adolesc Psychiatry. 2005 Sep;14(6):310-8. http://www.ncbi.nlm.nih.gov/pubmed/16220215

 

The definition of disabling fatigue in children and adolescents

Abstract:

BACKGROUND: Disabling fatigue is the main illness related reason for prolonged absence from school. Although there are accepted criteria for diagnosing chronic fatigue in adults, it remains uncertain as to how best to define disabling fatigue and Chronic Fatigue Syndrome (CFS) in children and adolescents. In this population-based study, the aim was to identify children who had experienced an episode of disabling fatigue and examine the clinical and demographic differences between those individuals who fulfilled a narrow definition of disabling fatigue and those who fulfilled broader definitions of disabling fatigue.

METHODS: Participants (aged 8-17 years) were identified from a population-based twin register. Parent report was used to identify children who had ever experienced a period of disabling fatigue. Standardised telephone interviews were then conducted with the parents of these affected children. Data on clinical and demographic characteristics, including age of onset, gender, days per week affected, hours per day spent resting, absence from school, comorbidity with depression and a global measure of impairment due to the fatigue, were examined. A narrow definition was defined as a minimum of 6 months disabling fatigue plus at least 4 associated symptoms, which is comparable to the operational criteria for CFS in adults. Broader definitions included those with at least 3 months of disabling fatigue and 4 or more of the associated symptoms and those with simply a minimum of 3 months of disabling fatigue. Groups were mutually exclusive.

RESULTS: Questionnaires were returned by 1468 families (65% response rate) and telephone interviews were completed on 99 of the 129 participants (77%) who had experienced fatigue. There were no significant differences in demographic and clinical characteristics or levels of impairment between those who fulfilled the narrower definition and those who fulfilled the broader definitions. The only exception was the reported number of days per week that the child was affected by the fatigue. All groups demonstrated evidence of substantial impairment associated with the fatigue.

CONCLUSION: Children and adolescents who do not fulfil the current narrow definition of CFS but do suffer from disabling fatigue show comparable and substantial impairment. In primary care settings, a broader definition of disabling fatigue would improve the identification of impaired children and adolescents who require support.

 

Source: Fowler T, Duthie P, Thapar A, Farmer A. The definition of disabling fatigue in children and adolescents. BMC Fam Pract. 2005 Aug 9;6:33. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1192794/ (Full article)

 

Family health and characteristics in chronic fatigue syndrome, juvenile rheumatoid arthritis, and emotional disorders of childhood

Abstract:

OBJECTIVE: To compare family health and characteristics in children with chronic fatigue syndrome (CFS), in juvenile rheumatoid arthritis (JRA), and emotional disorders.

METHOD: Parents of 28 children and adolescents aged 11 to 18 years with CFS, 30 with JRA, and 27 with emotional disorders (i.e., anxiety and/or depressive disorders) were recruited from specialty clinical settings and completed interviews and questionnaires assessing family health problems, parental mental distress, illness attitudes, and family burden of illness.

RESULTS: Parents of children with CFS were significantly more likely than those of children with JRA to report a history of CFS-like illness, high levels of mental distress, and a tendency to experience functional impairment in response to physical symptoms. Families of children with CFS were characterized by significantly greater emotional involvement and reported greater family burden related to the child’s illness in comparison with families of children with JRA.

CONCLUSIONS: CFS in childhood and adolescence is associated with higher levels of parental CFS-like illness, mental distress, emotional involvement, and family illness burden than those observed in association with JRA, a chronic pediatric physical illness.

 

Source: Rangel L, Garralda ME, Jeffs J, Rose G. Family health and characteristics in chronic fatigue syndrome, juvenile rheumatoid arthritis, and emotional disorders of childhood. J Am Acad Child Adolesc Psychiatry. 2005 Feb;44(2):150-8. http://www.ncbi.nlm.nih.gov/pubmed/15689728

 

Outpatient rehabilitative treatment of chronic fatigue syndrome (CFS/ME)

Abstract:

AIMS: To assess the outcome of outpatient multidisciplinary rehabilitative treatment (graded activities/exercise programme, family sessions, and supportive care) compared with supportive care alone for children and adolescents with chronic fatigue syndrome (CFS/ME).

METHODS: Fifty six young people (aged 9-17 years) with CFS/ME by standard criteria were followed up for 3-24 months. All subjects received supportive care. Families additionally opted to either enter the rehabilitation programme (supportive care plus graded activities/exercise programme and family sessions) or have no additional treatment.

RESULTS: Twenty two (39%) subjects had supportive care alone and 26 (46%) entered the programme. Treatment groups were comparable at baseline in terms of age, severity and duration of illness, Wellness score, and school attendance. At end of follow up, those in the programme group had significantly higher Wellness score and school attendance than those having supportive care alone. The programme significantly reduced the overall severity of illness: after the programme, 43% had complete resolution of CFS/ME compared to only 4.5% of those having supportive care alone. The presence of depressed mood and family beliefs about the aetiology of CFS/ME were not significantly associated with outcomes.

CONCLUSIONS: Outpatient rehabilitative treatment offers significant potential to improve the prognosis of CFS/ME in childhood and adolescence.

 

Source: Viner R, Gregorowski A, Wine C, Bladen M, Fisher D, Miller M, El Neil S. Outpatient rehabilitative treatment of chronic fatigue syndrome (CFS/ME). Arch Dis Child. 2004 Jul;89(7):615-9. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1719984/  (Full article)

 

Prevalence of chronic disabling fatigue in children and adolescents

Abstract:

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.

 

Source: Farmer A, Fowler T, Scourfield J, Thapar A. Prevalence of chronic disabling fatigue in children and adolescents. Br J Psychiatry. 2004 Jun;184:477-81. http://bjp.rcpsych.org/content/184/6/477.long  (Full article)

 

Impairment and coping in children and adolescents with chronic fatigue syndrome: a comparative study with other paediatric disorders

Abstract:

BACKGROUND: Functional impairment is a key feature of chronic fatigue syndrome (CFS) of childhood.

AIM: To compare impairment, illness attitudes and coping mechanisms in childhood CFS and in other paediatric disorders.

METHOD: Participants were 28 children and adolescents with CFS, 30 with juvenile idiopathic arthritis (JIA) and 27 with emotional disorders (ED). The measures used were interviews with children and parents, with detailed enquiry on impairment, including the Functional Disability Inventory (FDI), Illness Attitudes Scales (IAS), and Kidcope to measure coping styles in relation to common problems, illness and disability.

RESULTS: Children with CFS reported significantly more illness impairment, especially in school attendance, than those with JIA and ED. They had higher ‘worry about illness’ scores on the IAS. On the Kidcope they named school issues (work, expectations, attendance) as illness- or disability-related problems more than the other two groups. Fewer CFS participants reported using problem solving as a strategy to cope with illness and disability than with other problems in their lives. More in the CFS than in the JIA group used emotional regulation to cope with illness and disability. Fewer in the CFS than in the ED groups used social withdrawal to cope with illness and self-criticism for disability, but more used resignation to cope with disability.

CONCLUSION: Severe illness-related impairment, particularly through school non-attendance, and high levels of illness-related school concerns appear specific to CFS. CFS may also have characteristically high levels of generalised illness worry and particular styles of coping with illness and disability.

 

Source: Garralda ME, Rangel L. Impairment and coping in children and adolescents with chronic fatigue syndrome: a comparative study with other paediatric disorders. J Child Psychol Psychiatry. 2004 Mar;45(3):543-52. http://www.ncbi.nlm.nih.gov/pubmed/15055373

 

Chronic fatigue syndrome in children: a cross sectional survey

Abstract:

BACKGROUND: Chronic fatigue syndrome (CFS) in children is a controversial diagnosis with unclear aetiology, ill defined but likely increasing incidence, and debatable clinical management options. However these children experience real and considerable suffering. Appropriate research in this clinical population is sparse and usually occurs in tertiary referral units.

METHODS: Cross sectional survey of 36 children attending a GP specialist interest clinic in southeast England.

RESULTS: Patient sociodemographics and clinical morbidity were largely comparable to the literature from tertiary referral research centres. Some prognostic indicators for adults did not readily transfer to this younger age group, although several children had a positive family psychiatric history. Receiving treatment was associated with increased school attendance, but one third of subjects obtained no qualifications. Return to normal health or significant overall improvement was reported by 29/36 subjects.

CONCLUSIONS: The outcomes in this setting are favourable and comparable to those seen in a controlled setting; this study supports the concept that the prognosis for CFS in children and adolescents is generally good. However, the impact of the illness is significant and this is perhaps most evident in terms of education. Current methods of reporting educational outcomes in the literature are varied and merit development of standardised tools.

 

Source: Patel MX, Smith DG, Chalder T, Wessely S. Chronic fatigue syndrome in children: a cross sectional survey. Arch Dis Child. 2003 Oct;88(10):894-8. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1719321/ (Full article)