Screening for psychiatric disorders in chronic fatigue and chronic fatigue syndrome.
Buchwald, D, Pearlman, T, Kith, P et al. · Journal of psychosomatic research · 1997 · DOI
Quick Summary
This study looked at how common mental health conditions are in people with chronic fatigue and ME/CFS, and tested whether a simple questionnaire could help identify these conditions. Researchers interviewed 281 patients and found that about one-third had a current mental health disorder, while over 80% had experienced one at some point in their lives. A screening tool called the General Health Questionnaire performed reasonably well at spotting current psychiatric conditions, though it wasn't perfect.
Why It Matters
Understanding the relationship between psychiatric conditions and ME/CFS is important because these comorbidities can complicate diagnosis and treatment. This study provides practical evidence that a simple screening questionnaire can help identify patients who may benefit from mental health assessment, potentially improving overall clinical care. Clarifying whether psychiatric conditions are primary, secondary, or independent factors in ME/CFS remains crucial for targeted interventions.
Observed Findings
35% of CF/CFS patients had a current psychiatric disorder; 82% had a lifetime psychiatric disorder
GHQ scores ≥12 were significantly more frequent in patients with current (p<0.001) and lifetime (p<0.05) psychiatric diagnoses
A GHQ threshold of ≥12 achieved sensitivity of 0.69-0.76 and specificity of 0.51-0.62 for current psychiatric diagnoses
Longer illness duration, greater fatigue severity, and concurrent psychiatric disorders all predicted higher GHQ scores
Scores were similar between CF and CFS patient groups
Inferred Conclusions
The GHQ is a moderately useful screening tool for identifying current psychiatric disorders in CF/CFS patients, with lower GHQ scores making psychiatric illness less likely
Psychiatric comorbidity is highly prevalent in this population and should be systematically assessed in clinical practice
Multiple factors including disease severity and duration influence psychological distress in CF/CFS
Screening for psychiatric conditions may help optimize treatment approaches in CF/CFS care
Remaining Questions
Does psychiatric illness precede, follow, or occur independently of ME/CFS symptom onset?
What This Study Does Not Prove
This study does not establish whether psychiatric disorders cause ME/CFS, result from it, or occur independently. The cross-sectional design cannot determine temporal relationships or causality. The findings also may not generalize to ME/CFS patients in the community or primary care settings, as this was a referral clinic population that may have higher rates of psychiatric comorbidity.
Tags
Symptom:Fatigue
Method Flag:Weak Case DefinitionNo ControlsMixed Cohort
What is the prevalence of psychiatric disorders in unselected, community-based ME/CFS populations versus referral clinic settings?
How should treatment differ for patients with ME/CFS and comorbid psychiatric conditions—should psychiatric symptoms be addressed first, simultaneously, or differently?
What mechanisms might explain the high lifetime rate of psychiatric disorders (82%) in this population?