Table 2

ROME diagnostic criteria for irritable bowel syndrome

At least three months of continuous or recurrent symptoms of one of the following:
  Abdominal pain or discomfort
   (1) Relieved by defecation
   (2) Associated with a change in frequency of stool
   (3) Associated with a change in consistency of stool
 Two or more of the following, at least on 25% of occasions or days
   (1) Altered stool frequency: more than 3 bowel movements/day or less than 3 bowel movements/week
  (2) Altered stool form (lumpy/hard or loose/watery)
   (3) Altered stool passage (straining/urgency/feeling of incomplete evacuation)
   (4) Passage of mucus
   (5) Bloating or feeling of abdominal distension