What does diarrhoea feel like with coeliac disease?

Diarrhoea is a common presentation of Coeliac Disease and may be loose, pale, bulky, or difficult to flush. It can come with bloating, wind, cramping, tiredness, or unintended weight loss. Symptoms may persist or recur after eating foods containing gluten.

You may feel urgency, abdominal fullness, or rumbling before passing a loose stool. Some people notice stools that look greasy or contain more visible food because the small intestine is not absorbing nutrients normally. The pattern can vary, so the sensation alone cannot confirm coeliac disease. Testing is usually arranged while you are still eating gluten, because avoiding it first can affect results.

Keep hydrated with frequent sips of water; an oral rehydration solution can help when fluid loss is substantial. Note meals, stool changes, pain, and any rash or mouth ulcers. Arrange a medical assessment if symptoms keep returning. Do not begin a strict gluten-free diet before discussing testing, and do not rely on a food diary as a diagnosis.

Seek urgent care for severe or worsening abdominal pain, faintness, confusion, very little urine, or blood or black stool. Contact a clinician promptly if diarrhoea continues, you are losing weight, or you cannot maintain fluids. Children, older adults, and people who are pregnant may need earlier advice when dehydration is a concern.

Ask whether blood tests for coeliac disease are appropriate, whether gluten should remain in your diet until testing, and whether other causes of persistent diarrhoea need checking. Mention medicines, family history, weight changes, and whether symptoms improve when a suspected trigger is removed.