My son is 8 years old and suffers with reflux symptoms and sporadic diarrhoea. we have had blood tests and biopsies taken during an endoscopy which showed to be normal although a mild reflux damage in his stomach was noticed. He is deficient in vitamin D and shows a mild allergy to cows milk protein. We have now implemented a strict milk free diet although there has been no improvement to the symptoms. What else have you come across that could be another avenue to explore as this is affecting his day to day standard of life and we are desperate to help him overcome it.