Abdominal Bloating

Bloating is a feeling of fullness, tightness, or a visibly swollen tummy. It is common, but regular or painful bloating needs assessment.

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Quick Reference Facts

System FocusGastrointestinal
Clinical CharacterSubjective patient manifestation
Diagnostic UrgencyMonitor for red flag progress

Visual guide

Understanding bloating
Recognising the feeling
Noticing patterns

In simple words

Bloating is a feeling that the tummy is full, tight, or swollen. It may occur with extra gas, constipation, eating patterns, food intolerance, or an underlying digestive condition.

Clinical Meaning

Occasional bloating is common. The timing, bowel pattern, diet, pain, and whether the tummy is visibly enlarging help determine whether self-care or medical assessment is appropriate.

Common Causes

  • Gas from food and drinks, fizzy drinks, or swallowing air while eating
  • Constipation, IBS, coeliac disease, or food intolerance
  • Menstrual or gynaecological causes where relevant
  • A medicine effect or another digestive condition needing assessment

Clinical Red Flags

Seek urgent medical attention at an emergency department or primary care clinic if you present with any of the following symptoms:

  • Get urgent advice for bloating with vomiting, diarrhoea or constipation, tummy pain, fever, a new lump, or being unable to pee, poo, or pass wind.
  • Seek emergency help for sudden severe abdominal pain, vomiting blood or coffee-ground material, or severe breathing difficulty.
  • Arrange a review for regular bloating, unintentional weight loss, blood in stool, or symptoms that do not improve after simple changes.

Lifestyle & Diet Support

Eat slowly, avoid large late meals and fizzy drinks if they trigger symptoms, move gently after meals, and address constipation. Keep a simple food-and-symptom record. Do not make broad restrictive diet changes without professional advice, particularly if weight is falling.

Frequently Asked Questions

Gas, constipation, certain foods or drinks, IBS, and food intolerance are common contributors. The pattern matters more than a single food list.
Avoiding a personal trigger can help, but do not make extensive restrictions without a clinician or dietitian, especially if you are losing weight or have persistent symptoms.
Sudden severe tummy pain, vomiting blood, or inability to pass urine, stool, or wind needs urgent help.
Clinical & academic detailShow detail

Differential Diagnosis Matrix

Differential Diagnosis Overview

A clinician may review diet, bowel habits, medicines, periods or pelvic symptoms, weight, and examine the abdomen. Persistent symptoms may need testing based on the wider picture.

Reference Citations & Evidence Sources

Clinical Guidelines & Consensus Statements
  • CIT-0073Katz P. O., Dunbar K. B., Schnoll-Sussman F. H.. "ACG Clinical Guideline for the Diagnosis and Management of Gastroesophageal Reflux Disease." American Journal of Gastroenterology (2022).DOI PubMed
Clinical Reviews & Textbooks
  • CIT-0023National Center for Complementary and Integrative Health. "Homeopathy: What You Need To Know." National Institutes of Health (2021).

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