Are Functional Dyspepsia and Gastroparesis Separate Entities?

Area of Science:

• Gastroenterology
• Neurogastroenterology
• Functional Gastrointestinal Disorders

Background:

• Functional dyspepsia (FD) and delayed gastric emptying present indistinguishable clinical symptoms.
• Current classifications and diagnostic tools struggle to differentiate between FD (a gut-brain interaction disorder) and gastroparesis (a motility disorder).
• Both conditions stem from complex brain-gut interactions with poorly understood pathophysiology and frequent multisystem comorbidities.

Purpose of the Study:

• To highlight the diagnostic challenges in differentiating functional dyspepsia and delayed gastric emptying.
• To emphasize the need for revised diagnostic classifications based on underlying pathophysiology.
• To advocate for research into brain-gut neural signaling for improved diagnostic accuracy.

Main Methods:

• Review of current literature on functional dyspepsia and delayed gastric emptying.
• Analysis of existing diagnostic modalities and classification systems.
• Identification of knowledge gaps in pathophysiology and brain-gut interactions.

Main Results:

• Functional dyspepsia and gastroparesis lack clear separation in current diagnostic frameworks.
• Complex brain-gut interactions are implicated in both disorders.
• Multisystem comorbidities are common in patients with these conditions.

Conclusions:

• Existing classifications are insufficient to distinguish between functional dyspepsia and delayed gastric emptying.
• Future diagnostic approaches must integrate advanced research on brain-gut neural signaling.
• Establishing pediatric reference ranges is crucial for accurate diagnosis in younger populations.