About this condition
Irritable bowel syndrome (IBS) involves recurring abdominal pain linked to bowel movements or changes in stool frequency or form. Diarrhoea, constipation, or a mixture of both may occur. Bloating and discomfort can fluctuate over time. IBS is not the same condition as inflammatory bowel disease.
Clinical features
The pattern, duration and triggers of symptoms are important. A single episode of bloating does not establish IBS. Blood in the stool, anaemia, nocturnal diarrhoea, fever and unexplained weight loss warrant evaluation for other causes such as bowel inflammation or coeliac disease.
Important differences and warning signs
A gastroenterologist assesses the symptom pattern, medicines and warning signs. Selected patients may need testing for coeliac disease or markers of inflammation. Colonoscopy is not automatically required for everyone with typical IBS, but concerning symptoms should not be dismissed.
Assessment and individual care
Care is individual and may involve regular meals and sleep, carefully chosen dietary adjustments, soluble fibre, medicines matched to the dominant symptoms, and gut–brain behavioural therapies. Repeated antibiotics or restrictive diets without clear indications can cause unnecessary harm.
Related information: Persistent diarrhoea; Coeliac disease.
Signs and symptoms
- Recurrent abdominal pain or cramps that may change after a bowel movement.
- Altered bowel habits, with diarrhoea, constipation or alternating patterns.
- Bloating, excessive gas and a feeling of incomplete bowel emptying.
Diagnosis and tests
Assessment considers typical symptoms and red flags. Depending on the presentation, a clinician may recommend coeliac testing or inflammatory markers. Endoscopy is reserved for appropriate indications.
Care and treatment approaches
Management is tailored to symptoms and may include diet adjustments, soluble fibre, targeted medication and gut–brain approaches. Unnecessary antibiotic courses or extreme food restrictions are discouraged.
When to seek urgent care
Blood in the stool, marked weight loss, fever, dehydration or worsening pain require prompt review. For sudden severe pain, fainting or severe dehydration, seek emergency help on 103.
Frequently asked questions
Is IBS the same as Crohn’s disease?
No. Crohn’s disease causes inflammatory damage and may lead to complications; IBS is a disorder of gut–brain interaction.
Does everyone with IBS need a gluten-free diet?
No. Dietary changes are personalised. If coeliac disease is suspected, discuss testing before removing gluten.
Is a colonoscopy always required for IBS?
No. The need depends on age, symptoms and warning signs. Bleeding, anaemia or unexplained weight loss changes the assessment.
Information sources
Medical source links used when preparing this article.
Important information
A medical consultation is needed for diagnosis and treatment recommendations.
Self-treatment can be harmful to your health.
