[Myalgic encephalomyelitis/chronic fatigue syndrome: an overview of current evidence].
Ludwig, Birgit, Olbert, Elisabeth, Trimmel, Karin et al. · Der Nervenarzt · 2023 · DOI
Quick Summary
This review examines what we currently know about ME/CFS, including how it is diagnosed and what treatments have been studied. The authors note that after many years of research, we still don't have clear answers about what causes ME/CFS or proven treatments that work for everyone. They suggest that the high rates of depression and anxiety seen in ME/CFS patients should make us consider whether psychological factors play a role in the condition.
Why It Matters
This review is important because it provides a candid assessment of where ME/CFS research stands, highlighting that despite increased scientific interest (partly driven by long COVID), fundamental questions about the disease remain unanswered. The call for stricter diagnostic criteria and investigation of psychiatric comorbidity could help future research better identify effective treatments and understand disease heterogeneity.
Observed Findings
After years of scientific research, neither clear pathophysiological causal mechanisms nor evidence-based therapeutic results have been definitively identified for ME/CFS.
Psychiatric comorbidity rates in ME/CFS patients are notable and clinically evident.
Clinical manifestations of ME/CFS show similarities to long COVID and post-COVID presentations.
Current diagnostic classification systems for ME/CFS lack consistency and strict criteria across studies.
Randomized controlled therapeutic trials for ME/CFS have shown limited or inconsistent positive results.
Inferred Conclusions
The field would benefit from adopting stricter, more precise diagnostic criteria to improve research quality and comparability across studies.
A psychosomatic etiology of ME/CFS should be considered as a hypothesis given the elevated rates of psychiatric comorbidity.
Improved diagnostic standardization is necessary before robust pathophysiological and therapeutic research can proceed.
The similarities between ME/CFS and long COVID warrant comparative investigation to advance understanding of both conditions.
Remaining Questions
What is the causal relationship between psychiatric comorbidity and ME/CFS symptoms—is psychiatry primary, secondary, or independent?
What This Study Does Not Prove
This review does not prove that ME/CFS is primarily psychiatric in origin—it only notes that psychiatric comorbidity is common and suggests this warrants investigation. It does not establish whether psychiatric symptoms are a cause, consequence, or independent feature of ME/CFS. The review also does not propose or test any new treatments or diagnostic approaches; it only critiques existing evidence and recommends improvements to future research methodology.
Tags
Method Flag:EXPLORATORYPEM_UNCLEARPEM Not DefinedWeak Case Definition
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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