Digestive/GI
Irritable Bowel Syndrome (IBS)
About Irritable Bowel Syndrome (IBS)
Irritable Bowel Syndrome (IBS) is a common, chronic gastrointestinal disorder characterized by abdominal pain and changes in bowel habits. It does not cause inflammation or permanent damage to the bowel, distinguishing it from inflammatory bowel diseases.
Common Symptoms
- abdominal pain or cramping
- bloating
- gas
- diarrhea
- constipation
- alternating bouts of diarrhea and constipation
- mucus in the stool
- feeling of incomplete evacuation
Diagnosis
IBS is typically diagnosed based on a review of symptoms and medical history, rather than specific diagnostic tests. Healthcare providers often use criteria like the Rome IV criteria, which define IBS based on recurrent abdominal pain associated with defecation or a change in stool frequency or form. Other conditions with similar symptoms may be ruled out through tests such as blood tests or colonoscopy.
Causes
The exact causes of IBS are not fully understood, but it is believed to involve a combination of factors. These may include abnormal gut motility, visceral hypersensitivity (increased pain sensitivity in the gut), imbalances in gut microbiota, and disruptions in the brain-gut axis communication. Genetic factors and early life stress may also play a role.
Treatment Overview
Management of IBS often involves a multi-faceted approach aimed at symptom relief and improving quality of life. Conventional approaches may include dietary modifications, such as following a low-FODMAP diet or increasing fiber intake, and medications to manage specific symptoms like pain, diarrhea, or constipation. Commonly discussed complementary approaches may include probiotics, stress management techniques like mindfulness or cognitive behavioral therapy (CBT), and certain herbal remedies. These approaches are often tailored to an individual's predominant symptoms and triggers.
Prognosis & Outlook
IBS is a chronic condition, meaning it is often long-lasting, but it is generally not progressive and does not lead to other serious diseases. While there is no cure, symptoms can often be managed effectively with appropriate treatment and lifestyle adjustments. Many individuals with IBS are able to lead full and active lives with proper care.
Types & Variants
IBS with constipation (IBS-C)
On days with at least one abnormal bowel movement, more than a quarter of stools are hard or lumpy and less than a quarter are loose or watery.
IBS with diarrhea (IBS-D)
On days with at least one abnormal bowel movement, more than a quarter of stools are loose or watery and less than a quarter are hard or lumpy.
IBS with mixed bowel habits (IBS-M)
On days with at least one abnormal bowel movement, more than a quarter of stools are hard or lumpy and more than a quarter are loose or watery.
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