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With UC, what can I do if I have fever and abdominal pain?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

I am a 59-year-old female patient with a known history of ulcerative colitis. I am currently on the following medications: Mesalamine 1.2 grams, Pantoprazole 40 milligrams, and Rabeprazole. I now have symptoms of fever and abdominal pain.

Please help.

Hi,

Welcome to icliniq.com.

I read your query and can understand your concern.

I understand your concern. Given your current symptoms, such as persistent abdominal pain, fever, and fatigue, along with your known history of ulcerative colitis (a chronic inflammatory bowel disease that causes inflammation and ulcers in the lining of the colon and rectum), this could be a sign of a disease flare-up. There is also a possibility of complications such as a colitis-associated infection, for example, one caused by a bacterium called Clostridium difficile.

In more serious cases, it could indicate a condition called toxic megacolon (a rare, life-threatening complication of severe colon inflammation causing rapid bowel dilation and systemic toxicity), which is a rare but severe complication that sometimes occurs in inflammatory bowel disease.

Although you are already taking Mesalamine, which is a standard maintenance medication used to keep ulcerative colitis under control, the return of symptoms, especially systemic ones like fever, means this should be evaluated promptly.

One important step is to avoid taking both Pantoprazole and Rabeprazole together. These are proton pump inhibitors (PPIs) that reduce stomach acid. Taking both is unnecessary unless there is a specific medical reason. Dual acid suppression can increase the risk of infections and may negatively affect the balance of gut bacteria. It is usually best to continue with only one of them.

I recommend the following steps to better understand your condition:

  • Blood tests, including:

    • Complete blood count (CBC) to check for signs of infection or anemia.

    • C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) are used to assess levels of inflammation.

    • Liver and kidney function tests to rule out systemic involvement or any medication-related effects.

  • Stool tests, especially to check for infections:

    • Clostridium difficile toxin assay, since this infection is more common in people with inflammatory bowel disease.

    • Routine stool cultures and tests for parasites if diarrhea is present.

  • Depending on the results of your blood and stool tests, your doctor may suggest a sigmoidoscopy or colonoscopy. These are procedures that allow direct visualization of the colon to assess inflammation and rule out complications.

If a flare-up is confirmed:

You may need additional treatment, such as:

  • Corticosteroids like Prednisone or intravenous Hydrocortisone are used to reduce inflammation quickly

  • If symptoms are severe or do not improve, immunomodulators such as azathioprine or biologic therapies like infliximab or adalimumab may be considered for better long-term control

In the meantime:

  • Make sure to stay well hydrated, especially if you are experiencing diarrhea or fever.

  • Get adequate rest.

  • Avoid using nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen, as they can worsen inflammation in the colon.

  • Do not start any new medications or supplements without speaking to your doctor.

Please ensure that you visit the clinic or the emergency room if symptoms continue or become more severe. Early evaluation and treatment are very important to prevent complications. Let your doctor know immediately if you experience worsening abdominal pain, swelling, persistent vomiting, or bloody stools.

I hope this helps.

Kindly revert so I can assist you further.

Medically reviewed byiCliniq medical review team

Published At October 2, 2025
Reviewed AtOctober 3, 2025

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