Diverticular Disease Prevention And Treatment
Overview
Diverticular disease is a condition that affects the large bowel, also called the colon. Small pouches can form in the wall of the colon. These pouches are called diverticula. When the pouches are present but not inflamed, it is called diverticulosis. When one or more pouches become inflamed or infected, it is called diverticulitis. Diverticular disease is the general name for these related problems.
Key facts
- Many people with diverticula never have symptoms or problems.
- Diverticulitis happens when a pouch becomes inflamed or infected, and it can cause belly pain, fever, and changes in bowel habits.
- A high-fiber diet, drinking enough fluids, and staying active may lower the chance of problems for many people.
Yes. Diverticular disease is very common, especially in older adults. Many people learn they have diverticula during tests done for other reasons and have never had symptoms.
It becomes more common as people get older. It affects both men and women. Some people are more likely to have problems if they have a low-fiber diet, are overweight, smoke, are not very active, or have a family history of diverticular disease.
Symptoms
- Severe belly pain, especially in the lower left side, that is getting worse
- A hard, rigid, or very tender belly
- Fever with severe belly pain or feeling very unwell
- Vomiting and being unable to pass stool or gas
- Heavy bleeding from the back passage or large amounts of blood in the stool
- Fainting, confusion, a very fast heartbeat, or signs of shock
- ⚠New or worsening belly pain
- ⚠A fever or chills
- ⚠Blood in the stool or black stools
- ⚠Being unable to keep fluids down
- ⚠Pain or burning when passing urine, or needing to pass urine much more often, especially with belly pain
- ⚠Swelling or tenderness in the belly that is new
Common symptoms
- Often no symptoms at all
- Mild cramping or bloating in the lower belly
- Constipation or diarrhea
- Changes in bowel habits
- A feeling of fullness or discomfort in the lower belly
Symptoms in children
- Diverticular disease is uncommon in children.
- If a child has severe belly pain, fever, vomiting, or blood in the stool, get medical help promptly.
- Children with ongoing bowel changes should be checked by a healthcare provider.
Symptoms in older adults
- Diverticular disease is more common in older adults.
- Symptoms may be milder or less typical, so it is important not to ignore new belly pain or fever.
- Older adults may have a higher risk of complications, so early review by a healthcare provider is wise.
Causes
Main causes
- Diverticula form where the wall of the colon is weaker and pressure inside the bowel is higher.
- Straining to pass hard stool and a diet low in fiber may increase pressure in the colon over time.
- Age-related changes in the bowel wall can make pouches more likely.
- Diverticulitis happens when a pouch becomes inflamed or infected, but the exact trigger is not always clear.
Risk factors
- Getting older
- A diet low in fiber
- Not drinking enough fluids
- Being overweight
- Not being physically active
- Smoking
- A family history of diverticular disease
- Taking some medicines, such as certain painkillers or steroids, which can affect the bowel or increase risk
- Having had diverticulitis before
When to see a doctor
See a doctor urgently if:
- Severe or worsening belly pain
- Fever with belly pain
- Blood in the stool or black stools
- Vomiting and unable to keep fluids down
- A hard or rigid belly
- New urinary symptoms with belly pain
Book a routine appointment if:
- Ongoing changes in bowel habits
- Mild belly discomfort that keeps coming back
- Bloating or cramping that does not settle
- You have been told you have diverticulosis and want advice on prevention
- You want to discuss diet, fiber, or lifestyle changes
Diagnosis
Your healthcare provider will ask about your symptoms, bowel habits, diet, medicines, and family history. They will examine your belly. They may arrange blood tests, stool tests, or imaging. Diverticulosis is often found during a colonoscopy or scan done for another reason. Diverticulitis is usually diagnosed from your symptoms and a scan.
Tests that may be done
- Physical examination of the belly
- Blood tests
- Stool tests to check for infection or blood
- CT scan, which is a detailed picture of the belly
- Ultrasound scan in some cases
- Colonoscopy later on, after inflammation has settled, to check the colon
What to expect at your appointment
Tests depend on your symptoms and your healthcare provider's judgement. Some tests need preparation, such as drinking a special liquid or changing your diet for a short time. Ask your provider or pharmacist for clear instructions. A colonoscopy is usually not done during active diverticulitis because of the risk of injury to the bowel.
Treatment
Treatment depends on whether you have diverticula without inflammation, mild diverticulitis, or a complication. Most people with mild diverticulitis can be cared for at home with guidance from a healthcare provider. Severe cases may need hospital care. The goal is to settle symptoms, prevent flare-ups, and watch for complications.
Self-care at home
- Follow your healthcare provider's advice about rest, fluids, and food.
- Drink enough fluids, especially water, unless you have been told to limit them.
- Eat fiber gradually if advised, and increase it slowly to avoid bloating.
- Avoid straining when passing stool.
- Stay physically active as you are able.
- Keep a note of symptoms and triggers so you can discuss them at appointments.
- Do not use leftover medicines or another person's medicines.
Medical treatments
Your healthcare provider may advise rest, fluids, pain relief, and a temporary change in diet. If infection is suspected, they may recommend infection-fighting medicines. Severe cases may need hospital care with fluids, close monitoring, and sometimes a procedure to drain a collection of pus. Surgery is used for some complications or repeated severe attacks. Always follow your healthcare provider's plan and ask questions if anything is unclear.
When is surgery considered?
Surgery may be considered if you have repeated severe attacks, complications such as an abscess (a pocket of pus), a perforation (a hole in the bowel), a fistula (an abnormal tunnel between organs), or a stricture (narrowing of the bowel). It may also be considered if tests cannot rule out another serious bowel condition. Your surgical team will explain the risks and benefits.
Living with this condition
Many people live normal lives with diverticular disease. Learn what seems to trigger your symptoms, keep your bowels regular, and do not strain. Follow up with your healthcare provider if symptoms change. Most flare-ups can be managed with advice and support.
Lifestyle tips
- Eat a healthy diet with plenty of fiber from fruits, vegetables, whole grains, and beans, unless your provider advises otherwise.
- Drink enough fluids every day.
- Stay active with walking or other gentle exercise.
- Maintain a healthy weight.
- Do not smoke, and get help to quit if you do.
- Avoid straining on the toilet and go when you feel the urge.
- Manage stress and get enough sleep.
Diet and exercise
Fiber helps keep stool soft and easy to pass. Increase fiber slowly so your body can adjust, and drink more fluids as you do. Regular movement, such as walking, helps the bowel work well. You do not usually need to avoid nuts, seeds, or popcorn unless your healthcare provider tells you to. Ask your provider or a dietitian for advice that fits you.
Mental health and emotional wellbeing
Living with a bowel condition can cause worry, embarrassment, or stress, especially if symptoms are unpredictable. These feelings are common and worth discussing. If you feel overwhelmed or have thoughts of harming yourself, contact your local crisis support or emergency services immediately.
Prevention
You cannot change getting older or your family history, but healthy habits may lower the chance of diverticular problems and flare-ups. A high-fiber diet, enough fluids, regular activity, not smoking, and a healthy weight are all helpful.
Vaccines
There is no vaccine for diverticular disease.
Screening programmes
There is no routine screening test for diverticular disease. Colonoscopy may be used for bowel cancer screening or to check symptoms. Ask your healthcare provider about bowel cancer screening that is right for your age and region.
Complications
If left untreated
- An abscess (a pocket of pus) near the bowel
- A perforation (a hole in the bowel), which can let bowel contents leak
- Peritonitis (infection of the lining of the belly), which is serious and needs emergency care
- A fistula (an abnormal tunnel between the bowel and another organ)
- A stricture (narrowing of the bowel) that can cause blockage
- Bleeding from the bowel
- Bowel obstruction (blockage) in some cases
Long-term outlook
The outlook is usually good. Most people with diverticulosis never have serious problems, and most mild cases of diverticulitis settle with care. Seeking help early for severe pain, fever, or bleeding helps catch complications quickly. Many people manage well with lifestyle changes and a clear plan from their healthcare provider.
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Always verify with your doctor
Health guidance differs by country and region. This page is general education and may not match the guidelines, medicines, or practice where you live. Discuss your concerns with your own doctor or healthcare provider, and follow local guidance where it exists.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
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Sources and guidance
No guideline names this topic
No health guideline or clinical chapter that names this exact topic is cited here. This page is for general education and information only. It is not a diagnosis, a treatment plan, or personal medical advice. Check with your own doctor and follow their advice. If symptoms are severe, sudden, or worrying, get medical care promptly, and call your local emergency number in an emergency. Ruqelo LLC is not responsible for medical or legal outcomes from decisions based on this information.
Last updated: October 23, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.
Guidance may differ by country or region. Confirm local recommendations with a qualified healthcare provider.