Diverticular Disease

Diverticular disease involves small pouches, called diverticula, forming in weak spots in the wall of the colon. Many people have these pouches without any symptoms; this is known as diverticulosis. If a pouch becomes inflamed or infected, it can cause diverticulitis, a more acute form of the condition. Diverticular disease becomes more common as people get older.

Diverticulosis often causes no symptoms and may be found during tests for another reason. Symptomatic diverticular disease may cause discomfort or changes in bowel habits. Symptoms can vary, and they do not confirm the diagnosis on their own.

Diverticula can form when weak spots in the colon wall bulge outward, possibly as pressure develops inside the colon. The precise cause is not always known, and changes in the colon wall, bowel movement patterns, and inflammation may all play a role. A blockage in a pouch or changes in gut bacteria may contribute to diverticulitis, but no single cause explains every case.

Diverticulosis and diverticulitis

Diverticulosis means that one or more pouches are present in the colon wall. Diverticulitis means that one or more of those pouches has become inflamed or infected. Having diverticulosis does not automatically mean that infection or active inflammation is present.

Having a risk factor does not mean that someone will develop diverticular disease. Evidence about individual dietary factors can vary, so a clinician or dietitian can help tailor advice to a person’s health and bowel symptoms.

Most people do not develop severe complications, but inflammation or bleeding can occasionally cause significant problems. Complications are more likely to need prompt medical assessment and treatment.

Diagnosis starts with a medical history and an abdominal examination. A clinician will ask about the pattern and location of pain, bowel changes, fever, bleeding, and previous episodes.

The choice and timing of tests depend on symptoms, examination findings, age, bleeding, previous episodes, and concern about other bowel conditions. Testing helps clinicians distinguish diverticular disease from problems with similar symptoms.

Treatment depends on whether a person has no symptoms, ongoing symptoms, acute diverticulitis, or a complication. Clinicians also consider the severity of the problem, other health conditions, and overall health.

Non-surgical management

Non-surgical care may include gradually increasing fiber when appropriate, drinking enough fluid, staying physically active, and using pain relief selected with clinical guidance. It is generally used for diverticulosis or uncomplicated symptoms, while selected cases of diverticulitis may need antibiotics, observation, or hospital care. Symptoms often improve as inflammation settles, but people should follow individualized advice during an acute flare rather than changing their diet or medicines without guidance.

Procedures and surgery

A procedure may be needed to drain an abscess or treat another complication. In carefully selected cases, surgery removes the affected segment of colon, such as when there is perforation, obstruction, persistent complicated disease, or some recurrent problems. Recovery depends on the procedure and the person’s health and usually involves follow-up to monitor bowel function and healing.

These measures may support bowel health and could lower the risk of problems, but they cannot guarantee prevention of diverticular disease or diverticulitis. People recovering from diverticulitis may need individualized dietary advice, particularly while symptoms are settling.

Many people with diverticulosis remain symptom-free, and uncomplicated episodes of diverticular disease often improve with appropriate care. Diverticular disease is usually manageable, but complicated diverticulitis can require hospital treatment or a procedure and may have a more involved recovery.

Recurrence and follow-up

Some people have recurrent symptoms or further episodes, while others have long periods without problems. New, persistent, or changing symptoms should be reassessed rather than automatically attributed to diverticular disease. Outlook depends on the severity of the episode, complications, other health conditions, and response to treatment.

Arrange a medical appointment for persistent or recurrent abdominal pain, ongoing changes in bowel habits, unexplained rectal bleeding, or symptoms that do not improve with usual measures. A clinician can assess whether the symptoms are related to diverticular disease or another condition.