Diverticulitis

Diverticulitis is a gastrointestinal condition characterized by inflammation of diverticula, which are small pouches or sacs that can form in the wall of the colon (large intestine). These diverticula are usually harmless and may not cause any symptoms, but when they become inflamed, it can lead to diverticulitis.

Causes and Risk Factors

The exact cause of diverticulitis is not fully understood, but several factors contribute to its development. These include:

  • Aging: Diverticulitis is more common in people over the age of 40.
  • Low-fiber diet: A diet low in fiber can lead to constipation, which increases pressure on the colon and may cause diverticula to form.
  • Obesity: Being overweight or obese increases the risk of developing diverticulitis.
  • Lack of physical activity: Sedentary lifestyle can contribute to the development of diverticulitis.
  • Smoking: Smoking is a significant risk factor for diverticulitis.

Symptoms

The symptoms of diverticulitis may vary from person to person, but common signs include:

  • Abdominal pain, usually on the lower left side
  • Nausea and vomiting
  • Changes in bowel habits, such as constipation or diarrhea
  • Fever
  • Blood in the stool

Diagnosis

Diverticulitis is typically diagnosed using a combination of physical examination, medical history, and diagnostic tests. These may include:

  • Complete blood count (CBC) to check for signs of infection or inflammation
  • Blood tests to evaluate liver and kidney function
  • Imaging studies, such as computed tomography (CT) scan or magnetic resonance imaging (MRI), to visualize the colon and detect diverticula
  • Colonoscopy to examine the inside of the colon and rule out other conditions

Treatment

The treatment for diverticulitis depends on the severity of the condition. Mild cases may be managed with:

  • Antibiotics to treat infection
  • Rest and hydration to help the colon recover
  • Dietary changes, such as a liquid diet or low-fiber diet, to reduce symptoms

More severe cases may require:

  • Hospitalization for intravenous antibiotics and fluids
  • Surgery to remove the affected portion of the colon (colectomy) or to drain an abscess

Complications

If left untreated, diverticulitis can lead to complications such as:

  • Abscesses: Pus-filled pockets that can form in the colon wall
  • Perforation: A hole in the colon wall that allows bacteria and fecal matter to leak into the abdominal cavity
  • Peritonitis: Inflammation of the lining of the abdominal cavity, which can be life-threatening if not treated promptly
  • Bowel obstruction: Blockage of the colon that can prevent normal bowel movements

Prevention

To reduce the risk of developing diverticulitis, it is essential to:

  • Eat a high-fiber diet rich in fruits, vegetables, and whole grains
  • Stay hydrated by drinking plenty of water
  • Exercise regularly to maintain a healthy weight and improve bowel function
  • Avoid smoking and limit alcohol consumption

Article last updated on: 6th June 2025.
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