Sudden, sharp pain in the lower left side of your abdomen can be frightening. When it arrives with fever and nausea, many people wonder whether something serious is happening, and whether they will need an operation. For most people with diverticulitis, the answer is reassuring: the condition is often managed without surgery. Still, there are situations where surgery becomes an important option, and understanding them helps you take part in decisions about your care.
What Is Diverticulitis?
Diverticula are small pouches that can form in the wall of the colon. Having them is called diverticulosis, and it is very common, especially with age. Most people with diverticulosis never have symptoms. Diverticulitis occurs when one or more of these pouches become inflamed or infected, leading to pain, tenderness, fever, changes in bowel habits, and sometimes nausea or bloating.
Who Is Affected?
Diverticulitis becomes more common as people get older. Factors linked with a higher risk include a low-fiber diet, excess weight, lack of physical activity, smoking, and regular use of certain pain medicines such as nonsteroidal anti-inflammatory drugs. Family history may also play a role. It can affect younger adults as well, so symptoms should never be dismissed because of age.
How Is It Usually Treated?
Uncomplicated diverticulitis is often treated at home with rest, temporary diet changes, and pain control. Antibiotics have traditionally been used, though current research suggests that some mild cases may recover without them, so the decision depends on your symptoms, overall health, and your doctor's judgment. More severe cases may require hospital care, intravenous fluids, and intravenous antibiotics. Your clinician may use a CT scan to confirm the diagnosis and check for complications.
When Is Surgery Considered?
Surgery, usually removal of the affected section of the colon, is considered in a few circumstances:
- Emergencies: a perforation of the colon wall with spreading infection (peritonitis), or a large collection of infection that cannot be drained.
- Obstruction: scarring or narrowing that blocks the passage of stool.
- Fistula: an abnormal connection between the colon and another organ, such as the bladder.
- Abscess: a pocket of infection that does not respond to antibiotics or drainage.
- Recurrent or persistent illness: repeated attacks that significantly affect quality of life, or symptoms that do not resolve.
Older guidance suggested surgery after a set number of attacks. Newer evidence favors an individual approach that weighs how severe the episodes were, how they affect daily life, and your other health conditions. People with weakened immune systems may be advised differently.
Types of Surgery
The most common operation is a sigmoid colectomy, where the diseased segment is removed and the healthy ends are reconnected. Many planned operations can be done with minimally invasive techniques. In emergencies, a temporary or occasionally permanent colostomy may be needed. A surgeon can explain which approach fits your situation, along with the risks and recovery.
Practical Steps and Takeaways
- Seek care promptly for lower abdominal pain that is persistent or comes with fever.
- Follow the treatment plan you are given, including any diet guidance, and finish prescribed medicines.
- Eat a fiber-rich diet and drink plenty of fluids once symptoms settle.
- Stay active, maintain a healthy weight, and avoid smoking.
- Ask about follow-up evaluation of the colon after a significant episode.
Get Guidance You Can Trust
Severe abdominal pain, high fever, vomiting, or an inability to pass stool or gas needs urgent medical attention. If you have had diverticulitis and are unsure about next steps, a conversation with a clinician can bring clarity. To reach the practice of Aldo Gamarra, MD in Lancaster, CA, call (661) 579-6088 or visit 1658 West Ave J., Lancaster, CA 93534.

