Diverticulitis is a condition that occurs when small pouches (called diverticula) that form in the wall of the colon become inflamed or infected. While many people with diverticula never develop symptoms, diverticulitis can cause significant discomfort and may require medical treatment if left untreated.
Recognizing the early warning signs can help you seek care before complications develop.
What Is Diverticulitis?
As people age, small bulging pouches can form in weak areas of the colon. This condition is called diverticulosis and often causes no symptoms.
When one or more of these pouches become inflamed or infected, it is called diverticulitis.
1. Persistent Lower Left Abdominal Pain
The most common symptom is pain in the lower left side of the abdomen.
The pain may:
- Begin suddenly or gradually
- Become constant
- Worsen with movement
- Feel tender when pressed
Although left-sided pain is most common, some people may experience pain elsewhere depending on the location of the inflamed diverticula.
2. Fever and Chills
Because diverticulitis often involves infection, your body may respond with:
- Fever
- Chills
- Sweating
- Feeling generally unwell
A fever together with abdominal pain should not be ignored.
3. Changes in Bowel Habits
Inflammation of the colon can affect normal digestion.
You may notice:
- Constipation
- Diarrhea
- Difficulty passing stool
- Increased urgency
- Feeling that the bowel does not empty completely
These symptoms may come and go during an episode.
4. Nausea and Vomiting
Some people experience:
- Nausea
- Loss of appetite
- Vomiting
These symptoms may occur because inflammation slows the movement of food through the intestines.
Persistent vomiting requires prompt medical attention because it can lead to dehydration or signal a bowel obstruction.
5. Bloating and Excess Gas
Inflamed sections of the colon may cause:
- Abdominal bloating
- Increased gas
- Cramping
- A feeling of fullness
These symptoms can resemble other digestive disorders, making proper diagnosis important.
6. Tenderness or Pain When Touching the Abdomen
The affected area may become very sensitive.
You might notice:
- Pain when pressing on the abdomen
- Discomfort while walking
- Pain when coughing or changing positions
As inflammation worsens, tenderness often becomes more noticeable.
Who Is at Higher Risk?
Several factors may increase the likelihood of developing diverticulitis:
- Age over 40–50 years
- Low-fiber diet
- Obesity
- Smoking
- Physical inactivity
- Long-term constipation
- Family history
- Frequent use of certain medications, such as NSAID pain relievers
How Is Diverticulitis Diagnosed?
Your healthcare provider may recommend:
- Medical history and physical examination
- Blood tests to check for infection
- CT scan of the abdomen (commonly used to confirm the diagnosis)
- Urine tests if urinary symptoms are present
A colonoscopy is usually performed after recovery rather than during an acute attack.
Treatment
Treatment depends on the severity of the condition.
Mild Cases
- Rest
- Plenty of fluids
- Temporary low-fiber or clear-liquid diet (as advised by a healthcare provider)
- Pain relief as recommended by your doctor
Not everyone with uncomplicated diverticulitis needs antibiotics; the decision depends on the individual’s condition.
More Severe Cases
Hospital treatment may include:
- Intravenous fluids
- Antibiotics (when indicated)
- Pain management
- Surgery if complications develop, such as perforation, abscess, fistula, or bowel obstruction
Can Diverticulitis Be Prevented?
Although prevention is not always possible, healthy lifestyle habits may lower the risk of future episodes.
Helpful habits include:
- Eating a fiber-rich diet with fruits, vegetables, legumes, and whole grains
- Drinking plenty of water
- Exercising regularly
- Maintaining a healthy weight
- Avoiding smoking
- Following your healthcare provider’s recommendations if you’ve had diverticulitis before
Contrary to older advice, current evidence does not show that eating nuts, seeds, or popcorn increases the risk of diverticulitis.
When to Seek Emergency Medical Care
Seek immediate medical attention if you experience:
- Severe or worsening abdominal pain
- High fever
- Persistent vomiting
- Blood in your stool
- A swollen or rigid abdomen
- Fainting or confusion
- Inability to pass stool or gas
These symptoms could indicate serious complications that require urgent treatment.
Final Thoughts
Diverticulitis is a common digestive condition that can range from mild inflammation to a serious medical emergency. Early warning signs—such as persistent lower abdominal pain, fever, changes in bowel habits, nausea, bloating, and abdominal tenderness—should not be ignored.
With prompt diagnosis, appropriate treatment, and healthy lifestyle habits, most people recover well and can reduce their risk of future flare-ups. If you develop persistent abdominal pain or signs of infection, consult a healthcare professional as soon as possible.
