Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS): A preliminary survey among patients in Switzerland.
Tschopp, Rea, König, Rahel S, Rejmer, Protazy et al. · Heliyon · 2023 · DOI
Quick Summary
This Swiss study surveyed 169 ME/CFS patients to understand their experiences with the illness. Most patients were women, many couldn't work, and about half said their condition was getting worse over time. The study found that infections—especially viral ones like Epstein-Barr virus—often happened before people developed ME/CFS, and patients reported many different symptoms that got worse with certain triggers.
Why It Matters
This study provides important real-world data on ME/CFS patient experiences in a developed healthcare system, documenting the substantial burden on work capacity and quality of life. The strong association between preceding infections and disease onset supports further investigation of infectious triggers, which could inform prevention and treatment strategies.
Observed Findings
72% of participants reported infectious triggers (singular or multiple) associated with ME/CFS onset
77.8% recalled viral infections preceding illness, with Epstein-Barr virus most commonly reported
Only one-third of patients were working full- or part-time at time of survey
50.3% of patients reported their condition was progressively worsening
Patients self-reported an average of 13 different symptoms with identifiable exacerbation triggers
Inferred Conclusions
Infectious diseases, particularly viral infections, are frequently associated with ME/CFS onset in this Swiss population
ME/CFS has substantial socioeconomic impact, with significant employment disability affecting the majority of patients
ME/CFS is a progressive condition for many patients, with multiple comorbidities affecting overall disease burden
Remaining Questions
How do infection rates and types in this ME/CFS cohort compare to matched controls from the general Swiss population?
What mechanisms link specific viral infections (especially EBV) to ME/CFS pathophysiology?
What This Study Does Not Prove
This study does not prove that infections cause ME/CFS—it only shows that patients recall infections before symptom onset. The cross-sectional design and reliance on retrospective recall cannot establish causation, and the lack of a control group means we cannot determine whether infection rates differ from the general population. Selection bias may skew findings since participants were recruited through a patient association.
Tags
Method Flag:PEM_UNCLEARPEM Not DefinedWeak Case DefinitionNo ControlsExploratory Only
Are there predictive factors that identify which people who experience these triggering infections will develop ME/CFS and which will recover normally?