Evaluation and Management of Bloating

Initial Assessment

The American Gastroenterological Association recommends a thorough history and physical examination to identify "red flags" that require immediate evaluation, including unintentional weight loss, gastrointestinal bleeding, persistent vomiting, iron-deficiency anemia, or a family history of gastrointestinal malignancies 1
The European Society of Gastroenterology suggests evaluating the character of bloating, associated symptoms, and dietary habits, including lactose, fructose, wheat, dairy products, and coffee consumption 2, 3
The assessment of bowel habits, including straining, digital evacuation, and splinting, can indicate pelvic floor dysfunction 4, 5

The American College of Gastroenterology recommends reserving invasive tests for patients with "red flags", recent symptom worsening, or abnormal physical examination findings 1, 5
The British Society of Gastroenterology suggests serological testing for celiac disease, thyroid function, and anti-endomysial antibodies in patients with bloating 1, 2
The American Gastroenterological Association recommends sigmoidoscopy/colonoscopy in patients with gastrointestinal symptoms and biopsy of any pathological changes 2

The European Society of Gastroenterology suggests starting with simple dietary modifications, as many patients have excessive consumption of non-digestible carbohydrates, fruits, or caffeine 3
The American College of Gastroenterology recommends a low-lactose diet in patients consuming >280 ml of milk per day 3, 6
The British Society of Gastroenterology suggests a low-FODMAP diet in patients with irritable bowel syndrome (IBS) and functional dyspepsia, but only under the guidance of a trained gastroenterological dietitian 4, 5

The American Gastroenterological Association warns against missing ovarian cancer in women ≥50 years, as bloating and feeling of abdominal fullness are often the first symptoms 1
The European Society of Gastroenterology advises against excessive testing in patients with functional bloating without "red flags", as the yield is extremely low 1
The American College of Gastroenterology recommends avoiding overly restrictive diets without dietitian supervision, as there is a risk of eating disorders and malnutrition 4, 5