<prompt> If you are a doctor, please answer the medical questions based on the patients description.my daughter complains that she has abdominal pain right at her belly button most days. She was diagnosed with lactose intolerance as a small child. She drinks lactose free milk and we try to avoid lactose. She s 15 now do you think the pain is related to the lactose or does this sound like a gluten issue?  <response>: HI. I can understand your worry for a baby who was lactose intolerant. This can be a gluten problem, but that does not cause pain at a given spot as you have mentioned. Considering the age of 15 I would suggest you to undergo certain tests to rule out more important issues like :::Ultrasonography- this helps in diagnosis of enlarged lymph nodes in the abdomen, appendicitis and other causes. CT scan to confirm if there is some finding on ultrasonography. So get a Physical examination done by a Surgeon and investigations of the blood, urine and stool and corroborate with CT USG. Get a proper diagnosis and treatment. 