Johnson, S K, DeLuca, J, Natelson, B H · Journal of psychiatric research · 1996 · DOI
This study looked at personality traits in people with ME/CFS and compared them to people with multiple sclerosis, depression, and healthy controls. The researchers found that people with ME/CFS had some personality differences, but these were mostly explained by those who also had depression. Overall, the ME/CFS group fell between the healthy controls and the depression group in terms of personality traits.
This study helps clarify whether personality differences in ME/CFS are intrinsic to the illness or secondary to co-occurring depression—an important distinction for understanding the condition's psychiatric comorbidity. Understanding these relationships can reduce stigma by showing that personality changes in ME/CFS are not character-based but rather associated with medical illness.
This study does not prove that personality traits cause ME/CFS or vice versa; it only shows associations at a single time point. It cannot determine whether observed personality differences preceded illness onset, resulted from living with chronic illness, or are secondary to depression. The cross-sectional design prevents any causal interpretation.
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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