Can You Have Both IBS and IBD at the Same Time? Explained

Yes, you can have both Irritable Bowel Syndrome (IBS) and Inflammatory Bowel Disease (IBD) at the same time. While IBD (like Crohn’s disease or ulcerative colitis) and IBS are distinct conditions, they frequently overlap ^[1]. In fact, it is very common for people who have achieved remission for their IBD to still experience daily gastrointestinal distress such as abdominal pain, urgency, diarrhea, and bloating ^[2].

This overlap is often referred to medically as IBD with IBS-like symptoms ^[3][4]. Many patients find this incredibly frustrating, especially when they are told that their diagnostic tests “look great” even while they still feel awful.

Understanding a few key terms can help you navigate this experience:

• Clinical Remission: You feel well and have few or no symptoms ^[2].
• Objective (or Endoscopic) Remission: Medical tests—like a colonoscopy or stool markers—show no detectable active inflammation in your gut, even if you are still experiencing symptoms ^[2].
• IBS-Like Symptoms: Symptoms that mimic IBS (such as pain and changes in bowel habits) but may not meet the strict formal criteria for a standalone IBS diagnosis, or have not been fully evaluated yet ^[3].

Why Do Symptoms Continue Without Active Inflammation?

When active inflammation is gone, persistent symptoms can happen for several reasons. Even after the visible inflammation in your digestive tract has healed, post-inflammatory changes can remain:

• Visceral Hypersensitivity: Past inflammation can leave the nerves in your gut highly sensitive ^[5]. Normal digestion, gas, or stool moving through your intestines can trigger severe pain signals, even when there is no active tissue damage ^[6][7].
• Altered Gut-Brain Axis: Chronic inflammation and the stress of living with a chronic illness can alter how your brain and gut communicate ^[8]. This falls under a category of conditions called Disorders of Gut-Brain Interaction (DGBI), which includes IBS. Psychological stress can amplify physical symptoms, but this does not mean the pain is “all in your head” ^[9][10].
• Motility and Microbiome Changes: Prior inflammation may change how your gut muscles contract (motility) and alter the balance of bacteria in your microbiome, which may contribute to ongoing symptoms ^[6][7].

How Common Is This Overlap?

Research shows that roughly 20% to 35% of adult patients with Crohn’s disease or ulcerative colitis who are in objective remission still suffer from overlapping IBS-like symptoms ^[1][2]. These prevalence estimates can vary depending on the study population and exactly how remission is defined, but the consensus is that this is a widespread clinical issue ^[2]. Patients dealing with this overlap often experience a lower quality of life due to unpredictable bowel habits and ongoing pain ^[11].

Distinguishing IBD Flares, IBS, and Other Causes

While IBS and an IBD flare share overlapping symptoms—such as abdominal pain, diarrhea, and urgency—they are not identical. Because these symptoms overlap so heavily, you and your doctor cannot rely on symptoms alone to figure out what is happening ^[4][3].

Before labeling persistent symptoms as IBS, your doctor must verify that your IBD is actually in remission and rule out other potential causes ^[3]. To do this, clinicians use objective testing:

• Fecal Calprotectin: A noninvasive stool test that detects intestinal inflammation ^[12].
• Blood Tests: Checking for inflammatory markers like C-reactive protein (CRP). It is important to note that CRP can sometimes be normal even during active IBD ^[12].
• Endoscopy or Imaging: A colonoscopy or cross-sectional imaging (like an MRI or CT scan) may be used to visually inspect the gut for inflammation or structural problems, such as a stricture (a narrowing of the intestines) ^[3][13].

Your doctor should also consider other treatable causes that mimic IBS. These can include bile-acid diarrhea (especially common after ileal Crohn’s disease or surgery), gastrointestinal infections (such as C. difficile), small intestinal bacterial overgrowth (SIBO), celiac disease, or side effects from medications ^[13][14].

Safety Warning: Do not start, stop, or change your IBD maintenance medications without consulting your clinician. When an objective assessment confirms there is no active inflammation, simply escalating your IBD immune-suppressing therapies usually will not relieve IBS-like symptoms ^[3][15].

⚠️ When to Seek Urgent Care

Some symptoms are “alarm signs” that point to an active IBD flare, infection, or severe complication rather than IBS. Contact your care team promptly or seek emergency care if you experience:

• Heavy or persistent rectal bleeding, or black/tarry stools
• Severe, progressive, or rapidly worsening abdominal pain
• High or persistent fever
• Unexplained, significant weight loss
• Repeated vomiting, a swollen/distended abdomen, or the inability to pass gas or stool (which can be signs of an intestinal obstruction) ^[13]

Managing IBD with IBS-Like Symptoms

Once active inflammation and other mimics are ruled out, treatment focuses on managing your functional symptoms and improving your quality of life ^[3]. A multidisciplinary approach often works best:

• Dietary Adjustments: A short-term, dietitian-supervised low-FODMAP elimination diet has been shown to improve functional gut symptoms for many IBD patients in remission ^[16][17]. This involves systematically removing and then reintroducing specific fermentable carbohydrates to identify your personal triggers. It should be a time-limited trial, as prolonged restrictive dieting can cause nutritional deficiencies and impact your relationship with food ^[16].
• Symptom-Directed Medications: Doctors may prescribe anti-spasmodics for abdominal cramping, or specific medications to manage diarrhea or constipation ^[18][19]. Always consult your doctor before taking over-the-counter anti-diarrheals or anti-spasmodics, as these can be dangerous during an active colitis flare, severe infection, or if you have a stricture ^[18].
• Brain-Gut Therapies: Gut-directed hypnotherapy and cognitive behavioral therapy (CBT) may reduce symptom sensitivity and improve gut-brain signaling ^[18][20]. These therapies are legitimate treatments for symptoms and quality of life; utilizing them is not evidence that your physical symptoms are “just psychological” ^[18].