Corrado, G, Riezzo, G, Rea, P et al. · Italian journal of gastroenterology and hepatology · 1998
This study looked at stomach function in a teenager with ME/CFS by measuring how quickly food moves through the stomach and checking the electrical signals that control stomach contractions. The researchers found that this patient's stomach was working normally in both measures, suggesting that stomach problems may not be the cause of ME/CFS symptoms in this case.
Many ME/CFS patients report gastrointestinal symptoms, so understanding whether stomach dysfunction is a core feature of the illness is important. This study contributes to the literature on whether GI problems in ME/CFS are primary (caused by the illness itself) or secondary (resulting from other factors).
This single case does not establish that gastric dysfunction is absent in ME/CFS overall—individual patients may have different GI involvement. It also does not rule out other parts of the digestive system being affected, and findings in an adolescent may not apply to adult patients with ME/CFS.
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 →
The first block is for the primary paper and is the citation you should use in research work. The atlas-snapshot line only applies if you are specifically referring to this atlas’s reading of the paper on the date shown.
Primary citation
Corrado, G, Riezzo, G, Rea, P, Pacchiarotti, C, Cavaliere, M, & Cardi, E (1998). Normal gastric emptying time and myoelectrical activity in an adolescent with chronic fatigue syndrome.. Italian journal of gastroenterology and hepatology. https://pubmed.ncbi.nlm.nih.gov/9789150/
BibTeX
@article{mecfsatlas-corrado-1998-normal-gastric,
author = {Corrado, G and Riezzo, G and Rea, P and Pacchiarotti, C and Cavaliere, M and Cardi, E},
title = {Normal gastric emptying time and myoelectrical activity in an adolescent with chronic fatigue syndrome.},
journal = {Italian journal of gastroenterology and hepatology},
year = {1998},
note = {PubMed: 9789150},
url = {https://www.mecfsatlas.com/evidence/corrado-1998-normal-gastric},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-29. https://www.mecfsatlas.com/evidence/corrado-1998-normal-gastric
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