SPECIFIC food intake triggering postprandial epigastric pain syndrome may be correlated with duodenal mast cell infiltration and gastric wall motion, according to a small exploratory case-control study. The findings support the possibility that this acute, food-triggered pain, described as a painful gastric glitch, may represent a distinct disorder of gut–brain interaction, although larger studies are needed before formal recognition of the proposed syndrome.
Painful Gastric Glitch as a Distinct Clinical Phenotype
The investigators describe a painful gastric glitch as a presentation within the dyspepsia spectrum characterised by acute epigastric pain shortly after consuming specific foods or drinks. In this study, reported triggers included caipirinha, red wine, coffee and bananas. Importantly, all patients had unrevealing upper endoscopy findings, indicating no evidence of organic gastrointestinal disease despite their symptoms.
Seven patients with food-triggered epigastric pain were matched with seven healthy controls. All participants underwent gastroduodenal biopsies alongside dynamic gastroduodenal MRI, with baseline imaging followed by repeat scans at 15-minute intervals after ingestion of an individual trigger food or drink.
Gastric Motility
During MRI assessment, every patient experienced an acute pain episode, with a mean pain score of 6.6 out of 10, while none of the control participants reported symptoms.
Overall gastric motor function did not differ significantly between patients and controls. There were no significant differences in gastric accommodation, gastric wall motion or gastric emptying (all p>0.05). However, among patients, pain intensity showed a strong negative correlation with gastric wall motion time to peak (r =−0.81; p=0.027), suggesting that greater pain severity was associated with subtle changes in gastric wall motion dynamics.
Duodenal Mast Cells may Contribute to Symptoms
Histological analysis revealed significantly greater duodenal mast cell infiltration in patients with food-triggered epigastric pain than in matched controls. The median mast cell count was 140 (interquartile 25–75%: 117–153) versus 86 (76–117) in controls (p=0.020).
Although the study cannot establish causality, these findings suggest that low-grade mucosal immune activation, together with subtle alterations in gastric wall motion, may contribute to symptom generation in this proposed phenotype of postprandial epigastric pain syndrome.
Conclusion
Overall, the findings suggest that recurrent, food-triggered epigastric pain may be associated with increased duodenal mast cell infiltration and subtle changes in gastric wall motion despite unrevealing endoscopy. However, the small sample size and exploratory design mean the findings require confirmation in larger studies. Further research is needed to determine whether this presentation represents the proposed painful gastric glitch phenotype and to clarify its underlying mechanisms.
Reference
Ambros GE et al. Painful gastric glitch: an acute epigastric pain triggered by specific food as a new phenotype of postprandial epigastric pain syndrome. BMC Gastroenterol. 2026;DOI:10.1186/s12876-026-05060-5.
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