<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi Just wanted to let you ALL know that although I asked for help regarding my son s illness , you can review the question by seeing my account,...although this was the response: Orthodontic braces are not likely to cause the abdominal pain . You need not be apprehensive regarding using the braces. IT WAS HIS INVISALIGNS THAT MADE HIS SO TERRIBLY ILL,. I asked if this could be the problem, and you like all the other docs I saw or asked said no way. Do some research!!! He was deathly ill, lost 5 months of his life, extreme pain and suffering and you WERE NO HELP at ALL!!!  <response>: I think your son got abdominal symptoms due to some other ailment. You thought its cos of invitation as thats the only treatment he was undergoing. Its human nature to co-relate to extremely different things which co-existed. No medicine, no material, which is used recommended by any doctor comes in the market without knowing its all positive and negative effects. Get complete medical examination of your son done by a good physician i.e. MD medicine and get all the blood tests and sonographies as told by him. Remember one thing, if its due to allergy, its symptoms will first show up locally i.e. in oral cavity, lips, cheeks etc. I wish a rapid recovery of your son. 