Abdominal bloating in children: association with functional gastrointestinal diseases and adverse life events.

Abstract

BACKGROUND/AIMS: Abdominal bloating is a common symptom among children with functional gastrointestinal diseases (FGDs). It can lead to significant distress among affected children. However, its epidemiology, risk factors and clinical characteristics have not been described in paediatric population. We aimed to study die epidemiology and risk factors of abdominal bloating, and associated FGDs in Sri Lankan children. METHODS: A cross-sectional, island-wide survey was conducted in Sri Lankan children aged 10-16 years. Four provinces (out of 9) of the country were randomly selected and 2 schools were randomly selected from each of the provinces. From each school, 12 classes from academic years (grades) 6 to 11 (2 from each academic year) were randomly selected and all children in these classes were included in the study. The Rome III questionnaire for paediatric FGDs (self-report form) was used for data collection. FGDs were diagnosed using Rome III criteria. Abdominal bloating was considered to be present if die child indicated as having abdominal bloating at least 25% of the time during the past 2 months. RESULTS: A total of 1972 children and adolescents (54.8% boys, mean age 13.4 years, SD 1.8 years) were included in the analysis. One hundred and ninety-four (9.8%) children had abdominal bloating. Of them, 52.6% had aerophagia, 15.4% had irritable bowel syndrome, 9.7% had constipation, 6-7% had rumination syndrome, and 5.6% had functional abdominal pain. Bloating was significantly common among children exposed to emotional stress and adverse life events (P < 0.0001). Intestinal related symptoms and extra intestinal symptoms that were significantly associated with bloating include abdominal pain, nausea, pallor, photophobia and headache (P < 0.05). CONCLUSIONS: Bloating is a common symptom of children and often associated with a range of FGDs. Children who faced adverse life events and stress, have a higher tendency to develop bloating. Bloating coexist with several other intestinal related and extra intestinal symptoms.