Thirty-eight consecutive children with recurrent abdominal pain underwent lactose tolerance tests; 28 of these were also given sucrose tolerance tests. Abdominal pain and abnormal lactose tolerance tests were noted in 11 of 38, while none of the 28 had an abnormal sucrose tolerance test; however, 1 had abdominal pain. Elimination diet for 4 weeks produced significant or total pain relief in 10 of 11 (lactose free) and 0 of 1 children (sucrose free). Lactose intolerance seems to play a contributory role in recurrent abdominal pain in children, while sucrose intolerance does not.
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