Lange, G, Holodny, A I, DeLuca, J et al. · Applied neuropsychology · 2001 · DOI
This study looked at brain scans from people with ME/CFS to measure the size of fluid-filled spaces (ventricles) in their brains. Researchers found that people with ME/CFS had slightly larger ventricles compared to healthy controls, suggesting there may be subtle physical changes in the brains of some ME/CFS patients. While this difference was close to being statistically significant, it provides another piece of evidence that ME/CFS involves measurable brain changes.
This study provides objective neuroimaging evidence that ME/CFS involves detectable physical changes in brain structure, supporting the biological nature of the disease. Demonstrating quantifiable brain abnormalities helps validate ME/CFS as an organic condition and may guide future research into the mechanisms underlying cognitive and neurological symptoms.
This study does not prove that ventricular enlargement causes ME/CFS symptoms or explain what mechanism produces this change. The findings are correlational and do not establish whether ventricular changes are a primary feature of the disease, a secondary effect, or how they relate to specific symptoms. The small sample and pilot design limit generalizability.
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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