E3 PreliminaryPreliminaryPEM ✗Case-ControlPeer-reviewedMachine draft
Multiple Sclerosis/Chronic Fatigue Syndrome overlap: When two common disorders collide.
Gaber, Tarek A-Z K, Oo, Wah Wah, Ringrose, Hollie · NeuroRehabilitation · 2014 · DOI
Quick Summary
This study looked at whether people with Multiple Sclerosis (MS) might also have ME/CFS at the same time. Researchers examined 64 MS patients and found that 14% of them—all women—also met the diagnostic criteria for ME/CFS. Their fatigue and other symptoms like pain and headaches couldn't be fully explained by their MS alone, suggesting the two conditions can occur together in the same person.
Why It Matters
This study highlights an important diagnostic gap: patients with MS may develop ME/CFS as a separate condition, and failing to recognize this overlap could lead to inadequate or misdirected treatment. For ME/CFS patients with neurological symptoms, it raises awareness that similar overlaps with other conditions may exist and merit investigation.
Observed Findings
- 14% of MS patients screened (9 of 64) met Fukuda criteria for CFS/ME
- All patients with comorbid diagnosis were female
- Mean age of overlap group was 52 years (SD 9.7)
- Symptoms including myalgia, arthralgias, malaise, and recurrent headaches were not explained by MS disease patterns
Inferred Conclusions
- MS and CFS/ME may coexist in the same patients rather than one condition fully explaining the other
- Recognizing CFS/ME as a potential comorbidity in MS patients could improve diagnostic accuracy and treatment planning
- Clinicians should screen MS patients for CFS/ME symptoms that fall outside typical MS presentations
Remaining Questions
- What is the true prevalence of CFS/ME in larger and more diverse MS populations?
- Do the two conditions share any common pathophysiological mechanisms, or are they truly independent?
- Does diagnosing and treating comorbid CFS/ME in MS patients improve functional outcomes compared to treating MS alone?
- Why does the overlap appear to affect predominantly women, and what role do sex-specific factors play?
What This Study Does Not Prove
This study does not establish a causal relationship between MS and ME/CFS, nor does it determine whether the two conditions share common mechanisms. The small sample size, retrospective design, and lack of a control group mean the 14% prevalence figure may not be generalizable to all MS populations. It also does not address whether comorbid presentation affects prognosis or treatment response.
Tags
Symptom:PainFatigueSensory Sensitivity
Method Flag:PEM Not DefinedWeak Case DefinitionNo ControlsSmall SampleMixed Cohort
Metadata
- DOI
- 10.3233/NRE-141146
- PMID
- 25238862
- Review status
- Machine draft
- Evidence level
- Early hypothesis, preprint, editorial, or weak support
- Last updated
- 8 April 2026