Causes of constant stomach bloating

Bloating is a feeling of fullness or visible swelling in the abdomen. Eating quickly, fizzy drinks, chewing gum, and swallowing air can increase gas. Constipation can make the abdomen feel tight because stool and gas move more slowly.

Symptoms linked with meals may point toward food intolerance, including lactose intolerance, or another sensitivity. Irritable bowel syndrome can cause bloating with abdominal pain and changes in bowel habit. Coeliac disease, giardiasis, and Helicobacter pylori infection are other conditions a clinician may consider when symptoms persist, especially with diarrhoea, nausea, or upper-abdominal discomfort.

Keep a short record of meals, bowel movements, pain, and when swelling improves. Eat slowly, choose smaller meals, drink fluids, and add movement if comfortable. Avoid removing several food groups without advice; a clinician or nutrition counsellor can help test a suspected trigger safely. Arrange an appointment if bloating continues, keeps returning, or affects eating and daily activities.

Seek urgent care for severe or rapidly worsening abdominal pain, repeated vomiting, a hard swollen abdomen, inability to pass stool or gas, fainting, or blood in the stool. Arrange prompt medical review for unintentional weight loss, persistent diarrhoea, fever, yellowing of the skin, or bloating that is new and does not settle.

Ask whether your bowel pattern, medicines, or meal-related symptoms suggest a particular cause; which examinations or tests are appropriate; and whether a supervised food trial or nutrition counselling could help.