Meta Description: Recurrent abdominal pain was defined by Apley and Naish as 3 or more bouts of pain, severe enough to affect activities, occurring over a period of not less than 3 months.
In some children the pain occurs daily, and in others it is episodic. Functional gastrointestinal disorders are defined as conditions in which a variable combination of chronic or recurrent gastrointestinal symptoms is present in the absence of any readily identifiable structural or biochemical abnormality. Functional RAP are divided in to two groups; the first includes those in whom there is a pattern to the symptoms (e.g. irritable bowel syndrome, non-ulcer dyspepsia) and the second group includes those in whom no organic disease is demonstrable and in whom there is no recognizable pattern to the symptoms.
For more details: