- Pain resolves completely in 30% to 50% of patients by 2 to 6 weeks after diagnosis.

- This suggests that child and parent accept reassurance that the pain is not organic and that environmental modification is effective.

- Nevertheless, more long-term studies suggest that 30% to 50% of children who have functional abdominal pain in childhood experience pain as adults.

- Thirty percent of patients who have functional abdominal pain develop other chronic complaints as adults.