Kornreich, Charles, Szombat, Maya, Vandriette, Yun-Marie et al. · Primary care companion to the Journal of clinical psychiatry · 2008 · DOI
This study looked at whether ME/CFS and sudden onset of psychotic symptoms (like hallucinations or delusions) occur together by chance or if there might be a connection between them. The researchers examined case reports to explore whether patients with ME/CFS experienced psychotic episodes more often than would be expected. This small study helps raise awareness that mental health symptoms can sometimes accompany ME/CFS and deserve clinical attention.
ME/CFS patients often experience neuropsychiatric symptoms, and clarifying whether acute psychosis is a recognized manifestation of ME/CFS or a separate comorbidity has important implications for diagnosis and treatment. Understanding potential psychiatric complications helps clinicians provide comprehensive care and helps patients recognize symptoms that warrant urgent evaluation.
This study does not prove that ME/CFS causes psychosis or vice versa—it only documents cases where both occurred. The case-control design cannot establish causation or determine whether the conditions share a common biological mechanism. Findings from small case reports cannot be generalized to the broader ME/CFS population.
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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