Shaikh, Safia, Siddiqi, Zunaira, Ukachukwu, Crystal et al. · Cureus · 2023 · DOI
This study asked nearly 200 people recovering from COVID-19 about their symptoms. Most patients (85%) reported ongoing problems after infection, with fatigue being the most common complaint (59%). Other frequent problems included reduced physical stamina (49%), shortness of breath (33%), and anxiety (24%). The symptoms resembled those seen in ME/CFS, though the study did not confirm a direct connection.
Understanding the relationship between post-COVID syndrome and ME/CFS is critical, as both conditions involve debilitating fatigue and functional impairment. This study provides epidemiological evidence that a substantial proportion of COVID-19 patients experience ME/CFS-like symptoms, which could inform patient recognition, clinical diagnosis, and research priorities. Establishing potential connections may accelerate research into shared biological mechanisms and treatment strategies.
This study does not prove that post-COVID syndrome is caused by the same mechanisms as ME/CFS, nor does it establish that COVID-19 patients definitively develop ME/CFS. As a survey-based cross-sectional study without objective clinical assessment or biomarkers, it relies on self-reported symptoms and cannot determine causation. The symptom overlap documented here is suggestive but does not confirm biochemical or pathophysiological equivalence.
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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