Screening for psychiatric morbidity in subjects presenting with chronic fatigue syndrome

Abstract:

BACKGROUND: There is a need for a valid self-rating questionnaire to screen for psychiatric morbidity in patients with chronic fatigue syndrome (CFS). This study had the aim of assessing the utility and validity of two commonly used measures.

METHOD: Scores obtained on the General Health Questionnaire (GHQ) and the Beck Depression Inventory (BDI) were compared with various diagnostic and severity ratings obtained via a validating clinical interview, the Schedules for the Clinical Assessment of Neuropsychiatry (SCAN) in 95 consecutively referred subjects at a medical out-patient clinic who fulfilled standard criteria for CFS, and 48 healthy controls. Outcome measures were validating coefficients and receiver operating characteristics (ROC) for different thresholds and scoring on GHQ and BDI and index of definition (ID) as measured by SCAN; and Pearson and point by serial correlation coefficients for different diagnostic groups derived via SCAN and defined according to ICD-10 and DSM-III-R.

RESULTS: GHQ and BDI perform poorly as screeners of psychiatric morbidity in CFS subjects when compared with various SCAN derived ratings although results for controls are comparable with other studies.

CONCLUSIONS: Neither the GHQ nor BDI alone can be recommended as screeners for psychiatric morbidity in CFS subjects.

 

Source: Farmer A, Chubb H, Jones I, Hillier J, Smith A, Borysiewicz L. Screening for psychiatric morbidity in subjects presenting with chronic fatigue syndrome. Br J Psychiatry. 1996 Mar;168(3):354-8. http://www.ncbi.nlm.nih.gov/pubmed/8833692

 

Differential diagnosis of chronic fatigue in children: behavioral and emotional dimensions

Abstract:

A battery of self-report questionnaires and structured diagnostic interviews was administered to 20 children and adolescents who presented to a pediatric specialty clinic with chronic fatigue. Matched groups of healthy and depressed control subjects (aged 8 to 19 years) were also studied. Criteria were established to identify those items in the assessment battery that reliably differentiated among the three groups.

Analysis of item content suggested several clusters of characteristics that discriminated among the subject groups, including life changes, cognitive difficulties, negative self-attributions, social relationship disruption, and somatic symptom presentation.

The results suggest that certain psychological factors can discriminate chronic fatigue from depressive symptomatology, as well as normal functioning. Items discriminating among groups are presented in an organized questionnaire format to assist with the understanding and assessment of pediatric chronic fatigue cases.

 

Source: Carter BD, Kronenberger WG, Edwards JF, Michalczyk L, Marshall GS. Differential diagnosis of chronic fatigue in children: behavioral and emotional dimensions. J Dev Behav Pediatr. 1996 Feb;17(1):16-21. http://www.ncbi.nlm.nih.gov/pubmed/8675709

 

Postinfectious fatigue: prospective cohort study in primary care

Abstract:

The idea that chronic fatigue has an infectious origin has become popular, but the main evidence for such an association has come from retrospective case-control studies, which are subject to ascertainment bias. We report a prospective study of the outcome of clinically diagnosed infections in patients presenting to UK general practitioners.

Questionnaires assessing fatigue and psychiatric morbidity were sent to all patients aged 18-45 years in the study practices. The prevalence of chronic fatigue and chronic fatigue syndrome was then ascertained among 1199 people aged 18-45 who presented to the general practitioners with symptomatic infections and in 1167 people who attended the surgeries for other reasons. 84% were followed up at 6 months. 9.9% of cases and 11.7% of controls reported chronic fatigue (odds ratio 1.0 [95% CI 0.6-1.1]). There were no differences in the proportions who met various criteria for chronic fatigue syndrome. No effect of infection was noted when we excluded subjects who reported fatigue or psychological morbidity at the baseline screening.

The strongest independent predictors of postinfectious fatigue were fatigue assessed before presentation with clinical infection (3.0 [1.9-4.7]) and psychological distress before presentation (1.8 [1.2-2.9]) and at presentation with the acute infection (1.8 [1.1-2.8]). There was no effect of sex or social class. Our study shows no evidence that common infective episodes in primary care are related to the onset of chronic fatigue or chronic fatigue syndrome.

Comment in:

Viral illness and chronic fatigue (syndrome). [Lancet. 1995]

Viral illness and chronic fatigue (syndrome) [Lancet. 1995]

Viral illness and chronic fatigue (syndrome). [Lancet. 1995]

Viral illness and chronic fatigue (syndrome) [Lancet. 1995]

Viral illness and chronic fatigue (syndrome). [Lancet. 1995]

 

Source: Wessely S, Chalder T, Hirsch S, Pawlikowska T, Wallace P, Wright DJ. Postinfectious fatigue: prospective cohort study in primary care. Lancet. 1995 May 27;345(8961):1333-8. http://www.ncbi.nlm.nih.gov/pubmed/7752755

 

The Epstein-Barr virus and chronic fatigue syndrome

Abstract:

Lately discovered chronic fatigue syndrome is associated with Epstein-Barr virus infection. The objective of this paper was to detect this syndrome in our patients. 31 patients with cured acute infective mononucleosis were examined by questionnaire, physical check-up and laboratory analyses in order to detect disorders characteristic for chronic fatigue syndrome. Six months after they had been cured, out of 7 patients 5 patients complained of frequent sore throat, fatigue and exhaustion, and a year later, all 5 patients were sleepy and tired all the time. More than a year after the acute illness 19 patients were examined and in 5.6% frequent sore throat and enlarged neck lymph nodes occurred. The gathered results point to disorders characteristic for chronic fatigue syndrome in a high percentage. This pilot study should only be the beginning of examinations of this kind.

 

Source: Jovanović J, Cvjetković D, Brkić S, Madle-Samardzija N. The Epstein-Barr virus and chronic fatigue syndrome. Med Pregl. 1995;48(11-12):391-3. [Article in Croatian] http://www.ncbi.nlm.nih.gov/pubmed/8643052

 

Dimensional assessment of chronic fatigue syndrome

Abstract:

The absence of laboratory tests and clear criteria to identify homogeneous (sub)groups in patients presenting with unexplained fatigue, and to assess clinical status and disability in these patients, calls for further assessment methods. In the present study, a multi-dimensional approach to the assessment of chronic fatigue syndrome (CFS) is evaluated.

Two-hundred and ninety-eight patients with CFS completed a set of postal questionnaires that assessed the behavioural, emotional, social, and cognitive aspects of CFS. By means of statistical analyses nine relatively independent dimensions of CFS were identified along which CFS-assessment and CFS-research can be directed.

These dimensions were named: psychological well-being, functional impairment in daily life, sleep disturbances, avoidance of physical activity, neuropsychological impairment, causal attributions related to the complaints, social functioning, self-efficacy expectations, and subjective experience of the personal situation. A description of the study sample on these dimensions is presented.

 

Source: Vercoulen JH, Swanink CM, Fennis JF, Galama JM, van der Meer JW, Bleijenberg G. Dimensional assessment of chronic fatigue syndrome. J Psychosom Res. 1994 Jul;38(5):383-92. http://www.ncbi.nlm.nih.gov/pubmed/7965927

 

Chronic fatigue syndrome. Prevalence study overlooked

Comment on: Chronic fatigue syndrome: prevalence and outcome. [BMJ. 1994]

 

Editor,-It is sad that, in an issue in which Tony Delamothe considers biased reporting of the chronic fatigue syndrome, S M Lawrie and A J Pelosi’s editorial on the subject should be so one sided. The editorial’s title mentions the prevalence of the chronic fatigue syndrome, but the editorial fails to mention the most complete British study. In this study all general practices in two health boards were circulated with a questionnaire. There was a 91% response rate, with most respondents (71%) accepting the existence of the chronic fatigue syndrome when a strict definition was used. The doctors reported a prevalence among their patients of 1-3/1000 patients (range 0-3-2/1000 for the 10 areas surveyed). The higher prevalences were found in more populated areas.

You can read the rest of this comment here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2540208/pdf/bmj00440-0055a.pdf

 

Source: Ho-Yen DO, Shanks M. Chronic fatigue syndrome. Prevalence study overlooked. BMJ. 1994 May 14;308(6939):1299. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2540208/

 

Population based study of fatigue and psychological distress

Abstract:

OBJECTIVES: To determine the prevalence of fatigue in the general population and the factors associated with fatigue.

DESIGN: Postal survey.

SETTING: Six general practices in southern England.

SUBJECTS: 31,651 men and women aged 18-45 years registered with the practices.

MAIN OUTCOME MEASURES: Responses to the 12 item general health questionnaire and a fatigue questionnaire which included self reported measures of duration, severity, and causes of fatigue.

RESULTS: 15,283 valid questionnaires were returned, giving a response rate of 48.3%, (64% after adjustment for inaccuracies in the practice registers). 2798 (18.3%) of respondents reported substantial fatigue lasting six months or longer. Fatigue and psychological morbidity were moderately correlated (r = 0.62). Women were more likely to complain of fatigue than men, even after adjustment for psychological distress. The commonest cited reasons for fatigue were psychosocial (40% of patients). Of 2798 patients with excessive tiredness, only 38 (1.4%) attributed this to the chronic fatigue syndrome.

CONCLUSION: Fatigue is distributed as a continuous variable in the community and is closely associated with psychological morbidity.

Comment in:

Patients with a self diagnosis of myalgic encephalomyelitis. [BMJ. 1995]

Twists in the tale of impossible means. The reviewer shows that the gremlins might have attacked on several fronts. [BMJ. 2000]

Twists in the tale of impossible means. In which a copy of the original manuscript is found safe in Norway. [BMJ. 2000]

Fatigue and psychological distress. Statistics are improbable. [BMJ. 2000]

 

Source: Pawlikowska T, Chalder T, Hirsch SR, Wallace P, Wright DJ, Wessely SC. Population based study of fatigue and psychological distress. BMJ. 1994 Mar 19;308(6931):763-6. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2539651/

You can read the full article here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2539651/pdf/bmj00432-0041.pdf

 

A brief mental fatigue questionnaire

Abstract:

A brief mental fatigue questionnaire was administered to normal subjects and muscle-diseased, Chronic Fatigue Syndrome (CFS), recovered CFS and depressed patients. The questionnaire was found to have excellent internal consistency and discriminated effectively between CFS and depressed patients on the one hand and recovered CFS, normal and muscle-diseased patients on the other. However, the scale failed to discriminate between CFS and depressed subjects, who were found to experience qualitatively and quantitatively similar mental fatigue symptoms.

 

Source: Bentall RP, Wood GC, Marrinan T, Deans C, Edwards RH. A brief mental fatigue questionnaire. Br J Clin Psychol. 1993 Sep;32 ( Pt 3):375-9. http://www.ncbi.nlm.nih.gov/pubmed/7902751

 

General practitioners acceptance of the validity of chronic fatigue syndrome as a diagnosis

Abstract:

AIM: To identify whether general practitioners accept the validity of a diagnosis of chronic fatigue syndrome (CFS).

METHOD: An anonymous questionnaire was sent out to 98 general practitioners in Otago.

RESULTS: The clinical validity of chronic fatigue syndrome was accepted by 74 (90%); 57 believed they had sufficient knowledge about the condition to make a differential diagnosis; 72 indicated they had had patients with chronic fatigue syndrome in the past; 62 currently had patients; there is a minimum prevalence rate of 167/100,000 in the general practice population; 83 replies were received.

CONCLUSION: The 90% acceptance rate of chronic fatigue syndrome as a clinically valid diagnosis suggests that amongst the Otago general practitioners the controversy had receded. The low numbers suggest that they are on the conservative end of the diagnostic spectrum.

 

Source: Denz-Penhey H, Murdoch JC. General practitioners acceptance of the validity of chronic fatigue syndrome as a diagnosis. N Z Med J. 1993 Apr 14;106(953):122-4. http://www.ncbi.nlm.nih.gov/pubmed/8474729

 

Fatigue, depression, and social adjustment in chronic fatigue syndrome

Abstract:

The aims of this study were to determine the characteristics and perceived levels of fatigue and the prevalence of depression in children with chronic fatigue syndrome and to assess the effects of illness on schooling and social functioning.

Twelve children with chronic fatigue syndrome were compared with a matched group of children with cystic fibrosis and matched healthy controls. Levels of fatigue (fatigue questionnaire), depression (children’s depression inventory), and social adjustment (semistructured interview with parents) were compared between groups.

Children with chronic fatigue syndrome had significantly higher median scores for physical and mental fatigue and depressive symptomatology than either comparison group and five children scored as depressed on the children’s depression inventory.

Schooling and social functioning were seriously disrupted. Children with chronic fatigue syndrome reported high levels of fatigue affecting both physical and mental functioning, the association with depression found in adult studies was confirmed, and social adjustment was poor.

 

Source: Walford GA, Nelson WM, McCluskey DR. Fatigue, depression, and social adjustment in chronic fatigue syndrome. Arch Dis Child. 1993 Mar;68(3):384-8. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1793898/ (Full article)