Efficacy of Lactobacillus GG (LGG) in Children With Abdominal Pain

Inclusion Criteria: * Patients were considered for study inclusion, if they were 4 - 12 years of age and had if they had a pain history of at least 12 weeks (which need not be consecutive) in the preceding 12 months suggestive for IBS or FAP with no structural or metabolic abnormalities to explain the symptoms and according to the Rome II diagnostic criteria valid at the time of the design of the study. * IBS was diagnosed in presence of an abdominal discomfort or pain with at least two of three features: * relieved with defecation * onset associated with a change in stool frequency * onset associated with a change in the form (appearance) of the stool. * FAP was diagnosed in presence of symptoms of * Continuous (nearly continuous) abdominal pain * No or only occasional relation of pain with physiological events (e.g. eating, menses) * Some loss of daily functioning * The pain is not feigned (e.g. malingering) * The patient has insufficient criteria for other functional gastrointestinal disorders that would explain the abdominal pain. Exclusion Criteria: * Known concomitant psychiatric, neurological, metabolic, hepatic, renal, infectious, haematological, cardiovascular and pulmonary disease * Treatment with antibiotics/probiotics in the last 2 months * A pain history suggestive for functional dyspepsia or aerophagia or abdominal migrain * Growth failure * Gastroparesis * Gastrointestinal obstructions/stricture * Any disease that may affect bowel motility such as diabetes, connective disease or poorly controlled hypo/hyperthyrodism * Previous abdominal surgery.