Diverticular Disease

Diverticular disease involves small pouches in the bowel wall, which may cause symptoms or become inflamed.

The pouches are called diverticula and are often found in the large bowel. Many people have them without symptoms. When they cause ongoing bowel changes or discomfort, the term diverticular disease may be used; inflammation or infection of a pouch is called diverticulitis.

Abdominal pain, constipation and blood in stool are common presentations of diverticular disease. Bloating, changes in bowel habit and discomfort that improves after opening the bowels can also occur. Symptoms can overlap with other bowel conditions, so new or persistent changes deserve assessment.

Seek urgent medical help for severe or worsening abdominal pain, fever, repeated vomiting, a swollen abdomen, heavy bleeding, black stools, fainting or inability to pass stool and gas. These changes can indicate a complication that needs prompt care.

Diverticula develop when pressure inside the bowel pushes the inner lining through weaker areas of the bowel wall. Their formation is linked with changes in the bowel wall over time and may be influenced by bowel habits, diet, activity and other personal factors.

Diverticulitis happens when a pouch becomes inflamed. A clinician will consider other explanations for pain or bleeding because symptoms alone cannot confirm the cause.

Some people remain symptom-free, while others have episodes of lower abdominal discomfort or altered bowel habits. An inflamed episode can feel more sudden and may be accompanied by fever or feeling unwell. Recovery and follow-up needs depend on the severity and whether complications are suspected.

Keep track of pain location, stool changes, fever, food tolerance and any bleeding. This record can help a clinician distinguish a stable pattern from one requiring urgent investigation.

Ageing, constipation, low physical activity, excess body weight, smoking and a diet low in fibre may contribute to diverticular disease in some people. Certain medicines can also affect bowel function or increase concern when bleeding occurs.

Your clinician will review your medical history, diet, activity, medicines and prior bowel symptoms rather than relying on one risk factor alone.

A clinician will ask about the pain, bowel pattern, bleeding, fever and medicines, then examine the abdomen. Blood tests may be used if inflammation, infection, anaemia or dehydration is a concern. Stool testing or scans may be considered according to the symptom pattern.

During a severe flare, urgent imaging can help identify inflammation, an abscess, blockage or a tear in the bowel wall. Further bowel investigation may be planned after acute symptoms settle when it is safe and appropriate.

Care depends on whether symptoms are mild, persistent or suggest inflammation. A clinician may advise pain relief, fluids, temporary dietary adjustments and follow-up. Antibiotics or hospital care may be needed in selected cases of diverticulitis, particularly when a person is systemically unwell or complications are suspected.

For recurring symptoms, a personalised fibre and bowel-habit plan can be useful. Do not start restrictive diets during a painful flare without clinical advice, as recommendations can differ according to the situation.

When well, gradually improving fibre intake, drinking enough fluids and keeping active can support regular bowel movements. Increase dietary fibre slowly if it causes gas or discomfort, and discuss the best sources for you with a nutrition professional.

Plan a review if pain becomes more frequent, constipation changes despite self-care, or bleeding happens again. Keep taking prescribed medicines unless the prescriber advises a change.

Inflammation can occasionally lead to an abscess, a narrowed bowel, a blockage, a fistula or a tear in the bowel wall. These conditions need urgent assessment and may require hospital-based treatment. Significant bleeding also needs prompt medical evaluation.

Not every episode can be prevented, but regular bowel habits and a fibre-rich eating pattern when appropriate may support bowel health. Avoid smoking and discuss medicines that affect constipation or bleeding risk with a clinician rather than stopping them on your own.

A GP can assess new abdominal symptoms, arrange tests and advise when specialist review is needed. Nutrition counselling can help create a sustainable eating plan. Use urgent services for severe pain, fever, vomiting, heavy bleeding or signs of obstruction.