Tangible pathologies in functional dyspepsia.

Area of Science:

• Gastroenterology
• Pathophysiology
• Neurogastroenterology

Background:

• Functional dyspepsia (FD) is a prevalent gastrointestinal disorder characterized by abdominal pain and meal-related symptoms.
• Current definitions rely on symptom-based criteria (Rome consensus), with subtypes including postprandial distress syndrome and epigastric pain syndrome.
• Traditionally considered without identifiable pathology, FD is increasingly recognized to involve underlying pathophysiological changes.

Purpose of the Study:

• To review the evolving understanding of functional dyspepsia.
• To highlight the recognition of tangible pathologies in FD.
• To explore potential triggers and future therapeutic avenues for FD.

Main Methods:

• Literature review of Rome consensus criteria for functional bowel disorders.
• Analysis of epidemiological studies on FD triggers.
• Examination of emerging research on duodenal pathologies and brain-gut interactions in FD.

Main Results:

• FD encompasses symptom-based definitions but also involves significant pathologies such as Helicobacter pylori infection, duodenal eosinophilia, altered permeability, neuronal changes, and microbial dysbiosis.
• Epidemiological data suggest allergy, immune disorders, and infection as potential triggers for FD.
• Brain-gut/gut-brain axis disorders, including anxiety and depression, are associated with FD.

Conclusions:

• Functional dyspepsia is increasingly viewed as a distinct disease entity with identifiable underlying pathologies.
• Recognition of these pathologies offers a pathway toward developing targeted and more effective treatments for FD.
• Further research into duodenal pathology and brain-gut interactions is crucial for advancing FD management.