Hi doctor, my son has been having abdominal pain since April 2012 (mainly around his bellybotton and above) ! He has been for blood works (normal) xrays (constipation) , sonar (mesenteric adenitis ) and endoscopy (mild reflux and small hiatal hernia ) and he was also told he has IBS! He started getting better on the Nexium (8 week course) and antibiotics but in the last 2 weeks his symptoms have come back again with the daily abdominal pain and gas, he sometimes feels nausea and vomiting and passes stools every day! We are looking at his diet and have noticed that he is a bit lactose intolerent and I am worried that it might be something more serious i.e. celiac disease, chron s disease, lymphoma, etc! GP has now given him Altosec 20mg to take! Please can you help! Daleen