Irritable bowel syndrome

Irritable bowel syndrome (IBS) is a functional bowel disorder characterized by abdominal pain or discomfort and altered bowel habits with no discernible structural abnormalities.

IBS often overlaps with other functional disorders such as fibromyalgia, headaches, back pain and genitourinary symptoms. About 10% of the population is affected and it is more common in women.

Clinical Features:

  • Abdominal pain colicky or crampy type in the lower abdomen relieved by defecation.
  • The bowel movements are variable (constipation, diarrhea).
  • bloated feeling
  • Passing of mucus is common, but rectal bleeding does not occur.

IBS is diagnosed clinically using single iv criteria based on clinical signs and duration of symptoms combined with the absence of alarm symptoms (blood in stool, nocturnal symptoms, weight loss, family history of cancer, onset after age 50, abdomen , butt, anemia etc).

IBS classified has IBS c/d/m/u (constipation, diarrhea, mixed, unclassified)

Causes or Pathophysiology:

IBS is due to motility abnormalities, genetic factors, leaky gut dysbiosis (change in gut microbial composition), increased gut sensitivity, brain-gut interactions, and psychogenic.


  • CBC
  • CRP
  • If necessary, a colonoscopy is advised


  • eat regularly
  • Take time to eat
  • Avoid carbonated and caffeinated drinks
  • Avoid alcohol and artificial sweeteners
  • low fodmap diet
  • Do yoga
  • Medication is considered if necessary

Dr. Chethan G | Advisor Medical Gastroenterology | Narayana Multispecialty Hospital, HSR Layout

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