Hello - my 11 year old was seen at the ER about a month ago for severe abdominal pain.  We thought he was having appendicitis, and it turns out that he was very backed up in the intestines with stool.  He is a distance runner and runs about 20-30 miles per week.  He is 49 inches and weighs 77 pounds.  We have been giving him a daily dose of miralax and recently the pediatrician upped it to 1 and 1/2 cap full per day.  He has increased his water intake, but still could drink more (in this moms opinion!).He is not having the acute belly pain any longer, but does get sharp stabbing pains before and sometimes after a BM.  The BM is now flaky.  I was wondering if I should be taking him for a follow up x-ray to see if he has decreased the amount of stool in there.  What do you think?
Hi, Welcome to Chat Doctor forum.  Your boy is having stabbing pain in the abdomen before and after the bowel movements.  It appears to be due to the infection in the colon, may be amoebas.  I advise you to consult a gastroenterologist for diagnosis and treatment.  Avoid giving wheat, and barley, etc. I usually prescribe to my patient with such symptoms of lox, ornidazole, and ranitidine150.  Wishing for a quick and complete recovery.