Table 1.

Rome III diagnostic criteria of functional constipation

1. Must include two or more of the following

- Straining during at least 25% of defecations

- Lumpy or hard stools in at least 25% of defecations

- The sensation of incomplete evacuation for at least 25% of defecations

- The sensation of anorectal obstruction/blockage for at least 25% of defecations

- Manual maneuvers to facilitate at least 25% of defecations (e.g., digital evacuation, support of the pelvic floor)

- Fewer than three defecations per week

2. Rare presence of loose stool without the use of laxatives

3. Insufficient criteria for irritable bowel syndrome