<s>[INST] Good evening.  I have been having stomach problems since March and Ive been on Topamax since February.My symptoms are a burning sensation that goes around my waistline or is centralized to my lower right back or right side of my abdomen.  I had a colonoscopy yesterday and I am waiting for the results of that.Im wondering if Topamax is causing my issue.  I never had this problem before starting it. [/INST] Hi welcome to Chat Doctor forum.  Thanks for choosing Chat Doctor. Forum.  You have got some stomach problems, since March, burning sensation around the waist line, lower right back, or right side of abdomen. Report of colonoscopy is awaiting. You earth using tokamak since February.  Tokamak is operative used for epilepsy, it has a side effect related to the right abdominal pain and backache, But we should not get it confirmed.  The causes of right lower abdomen and back pain are Urinary tract infection, stone in the urinary tract, appendicitis, etc. I advise you to consult a surgeon for diagnosis and treatment. A how colonoscopy is done you may need to have U.S.scanning, besides other routine tests for confirmation. If all tests are negative we can confirm the side effect of the Chat Doctor.  If it is confirmed to be the side effect it should be stopped slowly by tapering the dose and another anti-epileptic should be started.  Wishing for a quick and complete recovery.  Best wishes. </s>