Chronic fatigue syndrome in the psychiatric practice.
Van Duyse, A, Mariman, A, Poppe, C et al. · Acta neuropsychiatrica · 2002 · DOI
Quick Summary
This review examines how psychiatric symptoms interact with ME/CFS. Many people with ME/CFS also experience depression, anxiety, or sleep problems, and doctors often miss these conditions. The study found that while antidepressant medications help with mood and social functioning, they don't improve fatigue itself. Cognitive behavioral therapy and graded exercise were the only treatments shown to actually improve fatigue and other ME/CFS symptoms.
Why It Matters
This review highlights that psychiatric assessment is essential for comprehensive ME/CFS care and that psychiatric comorbidities are frequently overlooked in general medical practice. Understanding that antidepressants target specific psychiatric symptoms rather than core fatigue helps patients and clinicians set realistic treatment expectations and pursue evidence-based interventions like cognitive behavioral therapy and graded exercise.
Observed Findings
70-80% of CFS patients present with psychiatric comorbidity
Depression, anxiety, somatization, and sleep disorders are the most common psychiatric symptoms in CFS
Physicians in general practice and non-psychiatric specialty settings frequently underdiagnose psychiatric pathology in CFS patients
Neuroendocrinological studies show inconsistent results regarding HPA-axis dysregulation; some CFS patients exhibit basal hypocortisolemia
Antidepressants improve depressive symptoms and social functioning but show no clear benefit for fatigue itself
Inferred Conclusions
Psychiatric assessment should be integrated into standard CFS evaluation to identify comorbidity and exclude primary psychiatric illness
CFS should not be characterized as masked or somatoform depression, despite high psychiatric comorbidity rates
Cognitive behavior therapy and graded exercise are the most evidence-supported treatments for improving fatigue in CFS
HPA-axis dysregulation may represent a distinct biological subphenotype in CFS, though causal mechanisms remain unclear
Remaining Questions
What is the causal relationship, if any, between HPA-axis dysregulation and fatigue in CFS?
What This Study Does Not Prove
This editorial does not establish that psychiatric illness causes ME/CFS or that CFS is fundamentally a psychiatric disorder. The HPA-axis findings, while suggestive, do not prove dysregulation is the primary cause of fatigue, and the high rate of psychiatric comorbidity may reflect shared underlying biological mechanisms rather than causation. The study also does not evaluate the long-term efficacy or optimal implementation of cognitive behavior therapy and graded exercise.