de Korwin, J-D, Chiche, L, Banovic, I et al. · La Revue de medecine interne · 2016 · DOI
Quick Summary
This article reviews what we know about ME/CFS more than 30 years after it was first recognized as a distinct condition. The authors explain that ME/CFS likely results from multiple causes working together—such as infections that trigger the illness and ongoing problems with the immune system, inflammation, and energy production in muscle cells. They discuss a newer framework called Systemic Exertion Intolerance Disease that may help doctors diagnose and treat the condition more effectively.
Why It Matters
This systematic review validates that ME/CFS involves real, measurable biological abnormalities rather than being purely psychological, which can help reduce diagnostic delays and stigma. The discussion of evolving diagnostic frameworks (particularly SEID) offers patients hope for more standardized, evidence-based clinical recognition and management approaches.
Observed Findings
Low-grade inflammation and microglial activation detected in ME/CFS patients
Decreased natural killer (NK) cell numbers and abnormal cytokine production
Mitochondrial dysfunction and failure of bioenergetic performance in muscles
Abnormal reactivity to allergens and possible role of estrogen in disease mechanisms
Multiple downstream dysfunctions affecting endocrine, neuromuscular, cardiovascular, and digestive systems
Inferred Conclusions
ME/CFS is a multifactorial condition with both triggering factors (infections) and maintenance factors (psychological and immunological)
The 2015 Systemic Exertion Intolerance Disease framework offers improved diagnostic clarity and may advance clinical management
Intensified research and improved recognition of ME/CFS patients are urgently needed to better understand and treat this debilitating condition
Despite decades of research, pathophysiology remains incompletely understood and requires continued investigation
Remaining Questions
What determines which biological abnormalities are primary disease mechanisms versus secondary consequences?
What This Study Does Not Prove
This editorial does not prove a single cause of ME/CFS or definitively establish which biological abnormalities are primary versus secondary consequences. It acknowledges that many available studies show contradictory results, meaning the relative importance of inflammation, immune dysfunction, and mitochondrial problems remains unclear. As an editorial synthesizing existing work, it presents no new experimental data of its own.