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The Daily Insight

What is the leading symptom of diverticulosis?

Author

Michael King

Updated on February 18, 2026

The most common symptom is abdominal pain, usually on the left side. You may also have fever, nausea, vomiting, chills, cramping, and constipation. In serious cases, diverticulitis can lead to bleeding, tears, or blockages.

How do you know you have diverticulosis?

A stool test, to rule out infection in people who have diarrhea. A CT scan, which can identify inflamed or infected pouches and confirm a diagnosis of diverticulitis. CT can also indicate the severity of diverticulitis and guide treatment.

What is the most common complication of diverticulosis?

Abscess. The most common complication of diverticulitis is an abscess outside the large intestine (colon). An abscess is a pus-filled cavity or lump in the tissue.

When should I worry about diverticulosis?

Blood in your stools. Fever above 100.4°F (38°C) that does not go away. Nausea, vomiting, or chills. Sudden belly or back pain that gets worse or is very severe.

What are the early warning signs of diverticulitis?

The signs and symptoms of diverticulitis include:

  • Pain, which may be constant and persist for several days. The lower left side of the abdomen is the usual site of the pain. ...
  • Nausea and vomiting.
  • Fever.
  • Abdominal tenderness.
  • Constipation or, less commonly, diarrhea.

What is diverticulitis? Causes, symptoms, treatment & more

What triggers diverticulitis flare ups?

You're more likely to experience a diverticulitis flare-up if you are:

  • Over age 40.
  • Overweight or obese.
  • A smoker.
  • Physically inactive.
  • Someone whose diet is high in animal products and low in fiber (most Americans)
  • Someone who takes non-steroidal anti-inflammatory drugs (NSAIDs), steroids or opioids.

What does poop look like with diverticulitis?

Diverticulitis stool characteristics

Color: The stool may be bright red, maroon, or black and tarry, which indicates the presence of blood. Stools may contain more mucus than normal. Odor: The stool odor may be increasingly foul compared to the typical smell.

What can irritate diverticulosis?

Actually, no specific foods are known to trigger diverticulitis attacks. And no special diet has been proved to prevent attacks. In the past, people with small pouches (diverticula) in the lining of the colon were told to avoid nuts, seeds and popcorn.

What foods should you avoid if you have diverticulosis?

Foods to avoid with diverticulitis include high-fiber options such as:

  • Whole grains.
  • Fruits and vegetables with the skin and seeds.
  • Nuts and seeds.
  • Beans.
  • Popcorn.

Can diverticulosis go away on its own?

In about 95 out of 100 people, uncomplicated diverticulitis goes away on its own within a week. In about 5 out of 100 people, the symptoms stay and treatment is needed. Surgery is only rarely necessary.

Can diverticula be removed during colonoscopy?

A polyp found during colonoscopy in patients with colonic diverticular disease may be removed by endoscopic polypectomy with electrosurgical snare, a procedure associated with an incidence of perforation of less than 0.05%.

How do you cure diverticulosis?

Diverticulitis is treated using diet modifications, antibiotics, and possibly surgery. Mild diverticulitis infection may be treated with bed rest, stool softeners, a liquid diet, antibiotics to fight the infection, and possibly antispasmodic drugs.

Can diverticulosis cause kidney problems?

Furthermore, diverticulitis is frequently severe in PKD patients, with 50 per cent requiring surgical intervention. These data suggest that diverticular disease may be an extrarenal manifestation of polycystic kidney disease.

How do you keep diverticulosis under control?

The best way to help prevent diverticulitis is to keep diverticulosis under control. That means eating a high fiber diet – which requires 20 to 35 grams of fiber each day. Fiber is found in grains, vegetables, and fruits.

What is the best medicine for diverticulosis?

How is diverticulitis treated? If your diverticulitis is mild, your healthcare provider will prescribe an oral antibiotic, such as metronidazole (Flagyl®), trimethoprim-sulfamethoxazole (Bactrim®), ciprofloxacin (Cipro®) or amoxicillin and clavulanic acid (Augmentin®).

What do diverticulitis attacks feel like?

The most common symptom of diverticulitis is belly or abdominal pain. The most common sign that you have it is feeling sore or sensitive on the left side of your lower belly. If infection is the cause, then you may have fever, nausea, vomiting, chills, cramping, and constipation.

What foods heal diverticulosis?

Examples of low-fiber foods include:

  • Canned or cooked fruits without skin or seeds.
  • Canned or cooked vegetables such as green beans, carrots and potatoes (without the skin)
  • Eggs, fish and poultry.
  • Refined white bread.
  • Fruit and vegetable juice with no pulp.
  • Low-fiber cereals.
  • Milk, yogurt and cheese.

What is the best drink for diverticulitis?

Water and clear juices (such as apple, cranberry, or grape), strained citrus juices or fruit punch. Coffee or tea (without cream or milk) Clear sports drinks or soft drinks, such as ginger ale, lemon-lime soda, or club soda (no cola or root beer)

Can coffee aggravate diverticulitis?

During acute attacks of diverticulitis, eat a low-fiber diet. Avoid foods that may contribute to nausea or pain, such as caffeine, spicy foods, chocolate, and milk products.

What drinks to avoid with diverticulitis?

Are alcohol and coffee bad for diverticulitis? Not necessarily, though you definitely want to avoid alcohol and caffeine if you're experiencing a diverticulitis attack. “Coffee is a bowel stimulant, so if you're having an attack you might want to stay away and rest your bowel,” says Dr.

Is cheese OK for diverticulitis?

A 2017 study involving more than 46,000 male participants suggests that avoiding the following foods may help prevent diverticulitis or reduce its symptoms: red meat. refined grains. full fat dairy.

Does diverticulitis cause gas?

Excess gas is often a symptom of chronic intestinal conditions, such as diverticulitis, ulcerative colitis or Crohn's disease. Small bowel bacterial overgrowth.

Can diverticulosis cause narrow stools?

When diverticulosis is far advanced, the lower colon may become very fixed, distorted, and even narrowed. When this occurs, there may be thin or pellet-shaped stools, constipation, and an occasional rush of diarrhea.

Can you have thin stools with diverticulitis?

In chronic diverticulitis, inflammation and infection may go down but never clear up completely. Over time, the inflammation can lead to a bowel obstruction, which may cause constipation, thin stools, diarrhea, bloating, and belly pain.

Can diverticulitis cause frequent urination?

The symptoms of diverticulitis depend upon the degree of inflammation present. The most common symptom is pain in the left lower abdomen. Other symptoms can include nausea and vomiting, constipation, diarrhea, and urinary symptoms such as pain or burning when urinating or the frequent need to urinate.