Management of Post-Infectious Functional Dyspepsia

Initial Diagnostic Steps

The American Gastroenterological Association recommends testing for H. pylori infection using a validated non-invasive test, such as a breath test or stool antigen test, in patients with post-infectious functional dyspepsia 1, 2, 3
Patients with overlapping bowel symptoms, such as diarrhea, constipation, or bloating, should undergo coeliac serology testing 1, 2
Endoscopy is not routinely needed unless the patient is 55 years or older with weight loss, or has other alarm features, as recommended by the American College of Gastroenterology 1, 2

The European Society of Gastroenterology recommends that patients with H. pylori positive status receive eradication therapy immediately, which is the only treatment proven to change the natural history of functional dyspepsia 1, 2
If symptoms persist after confirmed eradication, patients should proceed to proton pump inhibitor (PPI) therapy, as suggested by the American College of Gastroenterology 1, 2, 4
Patients with H. pylori negative status should start empirical acid suppression with a PPI at the lowest dose that controls symptoms, as recommended by the American Gastroenterological Association 1, 2, 4

Regular aerobic exercise is strongly recommended, despite limited evidence quality, as it has a positive effect on symptoms, according to the European Society of Gastroenterology 1, 2, 4
Patients should avoid specific foods that trigger their symptoms, but not adopt overly restrictive diets, as suggested by the American College of Gastroenterology 3, 5

Tricyclic antidepressants, such as amitriptyline, are the evidence-based second-line therapy for functional dyspepsia, particularly effective for epigastric pain, as recommended by the American Gastroenterological Association 6, 7, 3
Prokinetic agents may be considered if available, though efficacy varies and many are unavailable outside Asia/USA, as suggested by the European Society of Gastroenterology 1, 2

Referral to gastroenterology is appropriate if symptoms remain severe or refractory after first-line treatments, or if there is diagnostic uncertainty, as recommended by the American College of Gastroenterology 1, 2, 3, 7

Routine gastric emptying studies or 24-hour pH monitoring are not indicated for typical functional dyspepsia symptoms, as stated by the American Gastroenterological Association 1, 2
Opioid medications should be avoided for symptom management, as they worsen outcomes, according to the American College of Gastroenterology 3
Surgical interventions should not be pursued for functional dyspepsia, as recommended by the European Society of Gastroenterology 3