Irritable Bowel Syndrome (IBS) refers to recurrent abdominal pain and altered bowel habits without intestinal alteration. The symptoms are triggered by variety of factors. These are: - depression - anxiety - stress - trauma - gastrointestinal infections - antibiotic therapy - eating disorders - sexual abuse - physical or verbal abuse - pelvic surgery Reference: Kumar and Clark's Clinical Medicine Image via: https://en.wikipedia.org/wiki/Irritable_bowel_syndrome