frequency of celiac disease in children with chronic functional constipation in shiraz-iran

background celiac disease is an autoimmune mediated small intestine inflammation which is occurred due to hypersensitivity reaction to gluten and related proteins in diet in genetically predisposing individuals. prevalence of celiac among the population is about 0.5 – 1 % in most countries. frequency of celiac disease in children is a subject of few research .in this study, we aim to determine the frequency of celiac disease in patients presenting with functional constipation. method this cross-sectional one which was conducted on children referring to imam reza clinic, affiliated to shiraz university of medical sciences during one year starting from 2011, march 20. one hundred and one children 2-18 years of age which all had constipation for more than 2 months according to rome iii criteria. the entire participants underwent serologic studies of total iga and iga ttg. serum igg ttg was measured in cases with reported values of total iga below the lowest normal limits. moreover, endoscopic biopsy of the small intestine was also performed for patients with positive serology. results of all the 101 studied participants, only four individuals (3.96 %) had positive test for iga ttg ( potential celiac disease). one of these patients refused to do endoscopy and endoscopic small intestine biopsy underwent for 3 patients. two of them had normal pathology and one of them(0.99 %) was confirmed for celiac disease. conclusion the frequency of celiac disease in children with chronic constipation is slightly  higher than general population but without significant difference(0.99%  vs  0.6% ; p =0.64). so the screening serologic test for celiac disease is not recommended in children with chronic constipation.