New research suggests that learned fear of abdominal pain can heighten physical discomfort in people with inflammatory bowel disease, even when intestinal inflammation is under control, highlighting the importance of treating both digestive symptoms and the nervous system.
By yourNEWS Media Newsroom
Fear associated with previous episodes of abdominal pain may intensify physical suffering in people with inflammatory bowel disease (IBD), even during periods of remission, according to research examining how the brain processes pain-related memories and expectations.
The study, published in the journal PAIN, found that people with ulcerative colitis who developed fear associations during laboratory testing experienced greater pain sensitivity than healthy participants exposed to comparable conditions. The findings suggest that repeated inflammatory episodes may influence how the nervous system interprets painful sensations.
Researchers at Ruhr University Bochum in Germany conducted the experiment to investigate why some IBD patients continue experiencing significant abdominal discomfort despite successful treatment of intestinal inflammation.
“The fact that patients with inflammatory bowel disease (IBD) often experience symptoms like abdominal pain even during phases of disease remission suggests that mechanisms other than acute inflammatory processes contribute to the persistence of pain,” said Dr. Hanna Öhlmann, who led the research.
The study involved 43 participants, including 21 people diagnosed with ulcerative colitis and 22 healthy volunteers. Researchers used a two-day experiment designed to examine how fear develops and influences subsequent pain perception.
During the first session, participants viewed symbols on a screen, with certain images repeatedly associated with painful heat applied to the lower abdomen. Other symbols appeared without the painful stimulus.
The procedure allowed researchers to measure how participants learned to associate particular visual cues with discomfort.
Participants subsequently underwent sessions intended to reduce those learned associations. On the following day, researchers unexpectedly reapplied painful heat without displaying the warning symbols.
The results showed that people with ulcerative colitis did not necessarily develop stronger initial fear responses than healthy volunteers. However, among participants who acquired pain-related fear, the association between that fear and subsequent pain intensity was stronger in the ulcerative colitis group.
The findings suggest that previous experiences of severe abdominal pain may influence how the brain interprets later physical sensations.
According to a December 2025 statement from Ruhr University Bochum, recurring inflammatory episodes may contribute to changes in the gut-brain axis, the communication network connecting the digestive system and central nervous system.
These changes could increase sensitivity to pain even when active intestinal inflammation has diminished.
The research does not suggest that IBD-related pain is imaginary or simply caused by anxiety. Instead, it highlights how the nervous system can amplify genuine physical sensations through learned responses to previous experiences.
Ulcerative colitis and Crohn’s disease, the two principal forms of inflammatory bowel disease, involve chronic inflammation of the digestive tract. Symptoms can include abdominal pain, diarrhea, fatigue, weight loss and periodic disease flare-ups.
Conventional treatment focuses primarily on controlling inflammation through medications, including corticosteroids, immunomodulators and biologic therapies.
Although these treatments can reduce disease activity, some patients continue experiencing abdominal pain after inflammation has been brought under control.
The new findings suggest that addressing pain-related fear and avoidance behaviors may offer additional treatment opportunities for those patients.
Researchers pointed to cognitive behavioral therapy as one potential approach worth investigating. Such treatment can help individuals recognize threatening interpretations of physical sensations and modify behavioral responses that reinforce distress.
Mindfulness-based techniques and other psychological interventions may also help some patients manage chronic pain, although the latest study did not directly test their effectiveness.
Öhlmann emphasized that persistent abdominal pain deserves attention as an important part of inflammatory bowel disease rather than being dismissed when tests show limited inflammation.
“Patients who continue to experience abdominal pain despite successfully controlled inflammation may particularly benefit from a more holistic perspective,” she said.
The research also raises questions about whether similar mechanisms contribute to persistent pain in other chronic conditions, including rheumatoid arthritis and endometriosis.
However, the study was relatively small, involved participants with ulcerative colitis rather than all forms of IBD, and examined experimentally induced pain rather than long-term treatment outcomes.
Additional research will be needed to determine whether therapies specifically targeting learned fear can reduce chronic abdominal pain in everyday clinical settings.
The findings nevertheless support a broader understanding of inflammatory bowel disease in which effective care may require addressing both intestinal inflammation and changes in pain processing.
For patients who continue experiencing symptoms despite medical remission, the research offers a possible explanation for persistent discomfort and identifies another area for future treatment development.
Source: Natural News
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