Health information to help you understand symptoms. It isn't a diagnosis.About OwieClear
Check symptoms

Diverticulitis

Also called: Diverticulitis

Inflamed pouches in the colon, causing pain in the lower left belly, fever, and change in bowel habits.

PainLower left belly
TreatmentRest, diet, sometimes antibiotics

Overview

Pouches (diverticula) are common after 50.

Symptoms

Common signs:

  • Lower left belly pain

Less common

  • Fever
  • Constipation

When to get medical care

Call 911Severe pain, high fever, or vomiting.
Get care todayBelly pain with fever.
See a doctor soonRepeat flares.

Causes

Pouches in the colon.

Does it spread or run in families?

  • It isn't contagious. You can't catch it from someone else.

Who is more likely to get it

  • Over 50
  • Low fiber

Possible complications

  • Colon perforation

Diagnosis

A clinician examines your belly.

Tests

Tests, if needed:

  • CT scan:
  • Blood tests:

Treatment

Rest the bowel.

Self-care

  • Clear liquids then low-fiber food during a flare
  • Then a high-fiber diet

Medicines

Medicines that may help:

MedicineHelps withGood to know
Antibiotics
Some cases

OwieClear doesn't give doses: follow the label or your healthcare professional. Medicine names here are examples, not a full list.

Prevention

To prevent:

  • High fiber diet

Which doctor treats this

  • Start with your primary care provider (family doctor or internist).
  • They may send you to a gastroenterologist (stomach and gut doctor).

Children, pregnancy, and older adults

  • Adults over 50: Most common.

Pregnancy and breastfeeding

  • If you're pregnant or planning to be, tell your prenatal provider about this condition.
  • Don't start or stop any medicine on your own. Some are safe in pregnancy and some need to be changed.
  • Ask before taking any pain reliever. The FDA advises avoiding ibuprofen and naproxen after 20 weeks unless your doctor says to.
  • Breastfeeding: Most medicines are fine, but ask. The NIH LactMed database lists what's known about each one.

Outlook

Most recover.

Getting ready for your visit

Bring a list of your symptoms and medicines.

Questions to ask

  • Do I need a colonoscopy?

Research studies

Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.

Search ClinicalTrials.gov for studies on Diverticulitis

Sources

Last updated 2026-11-12.