Difference Between Colitis and Diverticulitis

Inflammatory illnesses of the colon include colitis and diverticulitis. Colitis is the inflammation of the colon. Diverticulitis is the inflammation of the colon’s diverticula.


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Colitis vs Diverticulitis

The difference between colitis and diverticulitis is that colitis affects the colon, whereas diverticulitis affects the diverticula. Infections, a lack of blood supply, or chronic disorders can all cause colitis. The exact cause of diverticulitis is unknown. Some research shows that excessive intake of medicines that are nonsteroidal and anti-inflammatory can cause this disease.

Colitis vs Diverticulitis

Colitis is an inflammation of the colon‘s inner lining. Infection, inflammatory bowel illness, ischemic colitis, allergic reactions, and tiny colitis are just some of the causes of colitis.

Diverticulitis, particularly colonic diverticulitis, is a gastrointestinal condition. It can form in the wall of the large intestine and can cause inflammation of the diverticula.

Comparison Table

Parameters of ComparisonColitisDiverticulitis  
Definition  Colitis can irritate the inner layer of the colon and it also affects the digestive system.Diverticulitis is the occurrence of diverticulum inflammation, especially in the colon and bowel range.
Location  Rectum,colon,lower intestine.  Lower abdomen.  
Symptoms   Severe stomach discomfort and soreness, diarrhea, fecal incontinence, flatulence, exhaustion, loss of appetite, and unexplained weight loss are all symptoms of this condition.  lower quadrant abdominal pain, dizziness, diarrhea, and blood in the stool.
Diagnostic method  Colon X-rays, stool testing, sigmoidoscopy, and colonoscopy.  A stool test, CT scan, colonoscopy.   
Types   Ulcerative colitis, microscopic colitis, pseudomembranous colitis, ischemic colitis, and crohn’s colitis.Simple or Complicated.  
Risk of Cancer  High risk of cancer.  Minor risk of cancer.  

What is Colitis?

The colon, often known as the large intestine, is inflamed in colitis. If you have colitis, you’ll have abdominal discomfort and pain that can range from mild to severe and arrive quickly.

Colitis does not have a nutritional treatment or cure. However, finding a balance between getting the nutrients, you need and avoiding foods that tend to aggravate your symptoms might help you manage the disease.

The colon is home to several microorganisms that coexist with the body and cause no symptoms. Shigella, Campylobacter, Ecoli, Escherichia, and Yersinia species are the most common bacteria that cause colitis.

Colitis treatment is determined by the underlying cause and is frequently centered on symptom reduction, supportive care, appropriate hydration, and pain control.

What is Diverticulitis?

Diverticulitis is a type of colitis, which is an inflammatory bowel illness. It can be serious and necessitate surgery if not treated promptly.

Diverticulitis develops when the thin necks of the diverticula get clogged with debris or indigestible foodstuff, and bacteria thrive in the blind sacs, unrestrained by the normal motor activity that maintains the intestine clean.

There is some indication that patients with diverticula, which is a precursor to acute diverticulitis, have low-grade chronic inflammation.

Digestion diverticulosis affects a large number of people in affluent western countries. Although most people with diverticular illness are asymptomatic, 10 to 25 percent of patients with diverticulosis develop diverticulitis.

Main Differences Between Colitis and Diverticulitis

  1. Inflammation in ulcerative colitis starts in the rectum and may spread to the colon. While the pain of diverticulitis is usually felt on the left side of your lower abdomen.
  2. A person’s cancer risk increases by around 0.5 percent to 1 percent every year after 8–10 years of having ulcerative colitis. Diverticulitis, on the other hand, is associated with a very low risk of cancer.
Difference Between Colitis and Diverticulitis


  1. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1981500/
  2. https://www.nejm.org/doi/full/10.1056/nejmcp073228
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