Illness behaviour of patients with chronic fatigue syndrome.
Schweitzer, R, Robertson, D L, Kelly, B et al. · Journal of psychosomatic research · 1994 · DOI
Quick Summary
This study asked 40 patients with ME/CFS to complete questionnaires about their health concerns and mood. Compared to people visiting general doctors, ME/CFS patients reported more worry about their health and stronger belief that they had a serious illness. However, they were less likely to think their symptoms were purely psychological. About two-thirds of the ME/CFS patients also showed signs of depression or anxiety on screening tests.
Why It Matters
Understanding illness behaviour patterns in ME/CFS is important because it helps distinguish between health-focused concern that reflects genuine disease burden versus psychological distress. These findings suggest ME/CFS patients have legitimate reasons for health vigilance based on their condition, while also highlighting the significant mood and anxiety symptoms that often accompany this illness.
Observed Findings
CFS patients scored significantly higher on General Hypochondriasis compared to general practice controls (t=5.2, p<0.001)
CFS patients scored significantly higher on Disease Conviction compared to general practice controls (t=13.28, p<0.001)
CFS patients scored significantly lower on Psychological/Somatic subscales compared to general practice controls (t=-5.88, p<0.001)
Two-thirds (66.7%) of CFS patients scored above the psychiatric morbidity cutoff on the GHQ-28
CFS patients showed higher general hypochondriasis scores than in a previously published CFS cohort
Inferred Conclusions
CFS patients exhibit distinct illness behaviour patterns characterized by high disease conviction but low attribution of symptoms to psychological causes
The high prevalence of psychiatric morbidity screening (66.7%) suggests depression and anxiety frequently accompany CFS
Illness behaviour in CFS differs from both general medical populations and psychiatric patients, suggesting a unique psychological profile related to the illness
Remaining Questions
Does heightened health concern represent a rational response to objective physiological dysfunction, or does it contribute to symptom amplification and disability?
What This Study Does Not Prove
This study does not establish whether heightened health concerns in ME/CFS patients are adaptive responses to real physiological dysfunction or maladaptive illness beliefs. The cross-sectional design cannot determine causation—it cannot show whether illness behaviour patterns contribute to CFS symptoms or result from them. The study also does not assess whether these psychological measures reflect accurate perception of disease severity.
Tags
Symptom:Fatigue
Method Flag:PEM Not DefinedWeak Case DefinitionSmall Sample